Home / 472,393,934.10-708,590,901.15-420,737,868.90

Finding the Fourth Proportional to 472,393,934.10, 708,590,901.15 and 420,737,868.90

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Solution

The fourth proportional to 472,393,934.10, 708,590,901.15 and 420,737,868.90 is: 631,106,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,934.10 : 708,590,901.15 = 420,737,868.90 : x
  2. Step 2: Convert to fraction form
    472,393,934.10/708,590,901.15 = 420,737,868.90/x
  3. Step 3: Cross multiply
    472,393,934.10x = 708,590,901.15 × 420,737,868.90
  4. Step 4: Simplify right side
    472,393,934.10x = 298,131,025,671,781,504
  5. Step 5: Solve for x
    x = 298,131,025,671,781,504/472,393,934.10
  6. Step 6: Final answer
    x = 631,106,803.35

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Similar ratio
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1.5x scale

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.