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Finding the Fourth Proportional to 624,342,647.60, 935,506,201.80 and 521,550,148.40

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Solution

The fourth proportional to 624,342,647.60, 935,506,201.80 and 521,550,148.40 is: 781,483,373.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,342,647.60 : 935,506,201.80 = 521,550,148.40 : x
  2. Step 2: Convert to fraction form
    624,342,647.60/935,506,201.80 = 521,550,148.40/x
  3. Step 3: Cross multiply
    624,342,647.60x = 935,506,201.80 × 521,550,148.40
  4. Step 4: Simplify right side
    624,342,647.60x = 487,913,398,377,910,272
  5. Step 5: Solve for x
    x = 487,913,398,377,910,272/624,342,647.60
  6. Step 6: Final answer
    x = 781,483,373.36

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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.