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Finding the Fourth Proportional to 553,203,750.70, 829,805,626.05 and 521,459,008.30

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Solution

The fourth proportional to 553,203,750.70, 829,805,626.05 and 521,459,008.30 is: 782,188,512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,203,750.70 : 829,805,626.05 = 521,459,008.30 : x
  2. Step 2: Convert to fraction form
    553,203,750.70/829,805,626.05 = 521,459,008.30/x
  3. Step 3: Cross multiply
    553,203,750.70x = 829,805,626.05 × 521,459,008.30
  4. Step 4: Simplify right side
    553,203,750.70x = 432,709,618,841,793,600
  5. Step 5: Solve for x
    x = 432,709,618,841,793,600/553,203,750.70
  6. Step 6: Final answer
    x = 782,188,512.45

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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.