Home / 812,590,281.38-1,121,381,179.09-441,314,969.96

Finding the Fourth Proportional to 812,590,281.38, 1,121,381,179.09 and 441,314,969.96

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Solution

The fourth proportional to 812,590,281.38, 1,121,381,179.09 and 441,314,969.96 is: 609,018,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,590,281.38 : 1,121,381,179.09 = 441,314,969.96 : x
  2. Step 2: Convert to fraction form
    812,590,281.38/1,121,381,179.09 = 441,314,969.96/x
  3. Step 3: Cross multiply
    812,590,281.38x = 1,121,381,179.09 × 441,314,969.96
  4. Step 4: Simplify right side
    812,590,281.38x = 494,882,301,365,512,896
  5. Step 5: Solve for x
    x = 494,882,301,365,512,896/812,590,281.38
  6. Step 6: Final answer
    x = 609,018,237.98

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Double scale
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1.5x scale

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.