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Finding the Fourth Proportional to 472,393,871.80, 708,590,807.70 and 288,727,862.20

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Solution

The fourth proportional to 472,393,871.80, 708,590,807.70 and 288,727,862.20 is: 433,091,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,871.80 : 708,590,807.70 = 288,727,862.20 : x
  2. Step 2: Convert to fraction form
    472,393,871.80/708,590,807.70 = 288,727,862.20/x
  3. Step 3: Cross multiply
    472,393,871.80x = 708,590,807.70 × 288,727,862.20
  4. Step 4: Simplify right side
    472,393,871.80x = 204,589,909,081,792,320
  5. Step 5: Solve for x
    x = 204,589,909,081,792,320/472,393,871.80
  6. Step 6: Final answer
    x = 433,091,793.30

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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.