Home / 1,314,959,021.76-1,972,390,694.88-394,811,445.60

Finding the Fourth Proportional to 1,314,959,021.76, 1,972,390,694.88 and 394,811,445.60

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Solution

The fourth proportional to 1,314,959,021.76, 1,972,390,694.88 and 394,811,445.60 is: 592,202,805.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,959,021.76 : 1,972,390,694.88 = 394,811,445.60 : x
  2. Step 2: Convert to fraction form
    1,314,959,021.76/1,972,390,694.88 = 394,811,445.60/x
  3. Step 3: Cross multiply
    1,314,959,021.76x = 1,972,390,694.88 × 394,811,445.60
  4. Step 4: Simplify right side
    1,314,959,021.76x = 778,722,421,533,561,472
  5. Step 5: Solve for x
    x = 778,722,421,533,561,472/1,314,959,021.76
  6. Step 6: Final answer
    x = 592,202,805.29

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Half scale
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Double scale
Find fourth proportional to 1,314,959,022.76, 1,972,390,696.38 and 394,811,446.60
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.