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Finding the Fourth Proportional to 716,347,381.60, 1,073,990,230.80 and 485,740,943.20

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Solution

The fourth proportional to 716,347,381.60, 1,073,990,230.80 and 485,740,943.20 is: 728,251,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,347,381.60 : 1,073,990,230.80 = 485,740,943.20 : x
  2. Step 2: Convert to fraction form
    716,347,381.60/1,073,990,230.80 = 485,740,943.20/x
  3. Step 3: Cross multiply
    716,347,381.60x = 1,073,990,230.80 × 485,740,943.20
  4. Step 4: Simplify right side
    716,347,381.60x = 521,681,027,696,377,664
  5. Step 5: Solve for x
    x = 521,681,027,696,377,664/716,347,381.60
  6. Step 6: Final answer
    x = 728,251,461.65

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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.