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Finding the Fourth Proportional to 881,899,951.16, 1,217,012,274.61 and 485,414,463.80

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Solution

The fourth proportional to 881,899,951.16, 1,217,012,274.61 and 485,414,463.80 is: 669,866,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,899,951.16 : 1,217,012,274.61 = 485,414,463.80 : x
  2. Step 2: Convert to fraction form
    881,899,951.16/1,217,012,274.61 = 485,414,463.80/x
  3. Step 3: Cross multiply
    881,899,951.16x = 1,217,012,274.61 × 485,414,463.80
  4. Step 4: Simplify right side
    881,899,951.16x = 590,755,360,710,532,992
  5. Step 5: Solve for x
    x = 590,755,360,710,532,992/881,899,951.16
  6. Step 6: Final answer
    x = 669,866,644.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.