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Finding the Fourth Proportional to 619,164,902.70, 928,747,354.05 and 571,813,509.60

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Solution

The fourth proportional to 619,164,902.70, 928,747,354.05 and 571,813,509.60 is: 857,720,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,164,902.70 : 928,747,354.05 = 571,813,509.60 : x
  2. Step 2: Convert to fraction form
    619,164,902.70/928,747,354.05 = 571,813,509.60/x
  3. Step 3: Cross multiply
    619,164,902.70x = 928,747,354.05 × 571,813,509.60
  4. Step 4: Simplify right side
    619,164,902.70x = 531,070,284,051,044,288
  5. Step 5: Solve for x
    x = 531,070,284,051,044,288/619,164,902.70
  6. Step 6: Final answer
    x = 857,720,264.40

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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.