Home / 472,395,915.20-708,593,872.80-429,313,764.80

Finding the Fourth Proportional to 472,395,915.20, 708,593,872.80 and 429,313,764.80

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Solution

The fourth proportional to 472,395,915.20, 708,593,872.80 and 429,313,764.80 is: 643,970,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,395,915.20 : 708,593,872.80 = 429,313,764.80 : x
  2. Step 2: Convert to fraction form
    472,395,915.20/708,593,872.80 = 429,313,764.80/x
  3. Step 3: Cross multiply
    472,395,915.20x = 708,593,872.80 × 429,313,764.80
  4. Step 4: Simplify right side
    472,395,915.20x = 304,209,103,245,980,288
  5. Step 5: Solve for x
    x = 304,209,103,245,980,288/472,395,915.20
  6. Step 6: Final answer
    x = 643,970,647.20

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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.