Home / 1,428,154,112.58-1,970,744,515.38-801,501,513.54

Finding the Fourth Proportional to 1,428,154,112.58, 1,970,744,515.38 and 801,501,513.54

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Solution

The fourth proportional to 1,428,154,112.58, 1,970,744,515.38 and 801,501,513.54 is: 1,106,011,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,154,112.58 : 1,970,744,515.38 = 801,501,513.54 : x
  2. Step 2: Convert to fraction form
    1,428,154,112.58/1,970,744,515.38 = 801,501,513.54/x
  3. Step 3: Cross multiply
    1,428,154,112.58x = 1,970,744,515.38 × 801,501,513.54
  4. Step 4: Simplify right side
    1,428,154,112.58x = 1,579,554,711,877,723,904
  5. Step 5: Solve for x
    x = 1,579,554,711,877,723,904/1,428,154,112.58
  6. Step 6: Final answer
    x = 1,106,011,387.68

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Double scale
Find fourth proportional to 1,428,154,113.58, 1,970,744,516.76 and 801,501,514.54
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.