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Finding the Fourth Proportional to 624,342,642.60, 935,506,194.30 and 521,550,143.40

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Solution

The fourth proportional to 624,342,642.60, 935,506,194.30 and 521,550,143.40 is: 781,483,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,342,642.60 : 935,506,194.30 = 521,550,143.40 : x
  2. Step 2: Convert to fraction form
    624,342,642.60/935,506,194.30 = 521,550,143.40/x
  3. Step 3: Cross multiply
    624,342,642.60x = 935,506,194.30 × 521,550,143.40
  4. Step 4: Simplify right side
    624,342,642.60x = 487,913,389,788,753,216
  5. Step 5: Solve for x
    x = 487,913,389,788,753,216/624,342,642.60
  6. Step 6: Final answer
    x = 781,483,365.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.