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Finding the Fourth Proportional to 1,057,220,373.02, 1,459,098,631.44 and 639,535,647.44

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Solution

The fourth proportional to 1,057,220,373.02, 1,459,098,631.44 and 639,535,647.44 is: 882,640,565.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057,220,373.02 : 1,459,098,631.44 = 639,535,647.44 : x
  2. Step 2: Convert to fraction form
    1,057,220,373.02/1,459,098,631.44 = 639,535,647.44/x
  3. Step 3: Cross multiply
    1,057,220,373.02x = 1,459,098,631.44 × 639,535,647.44
  4. Step 4: Simplify right side
    1,057,220,373.02x = 933,145,587,936,798,464
  5. Step 5: Solve for x
    x = 933,145,587,936,798,464/1,057,220,373.02
  6. Step 6: Final answer
    x = 882,640,565.53

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Double scale
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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.