Home / 472,392,511.20-708,588,766.80-426,476,008.80

Finding the Fourth Proportional to 472,392,511.20, 708,588,766.80 and 426,476,008.80

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Solution

The fourth proportional to 472,392,511.20, 708,588,766.80 and 426,476,008.80 is: 639,714,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,511.20 : 708,588,766.80 = 426,476,008.80 : x
  2. Step 2: Convert to fraction form
    472,392,511.20/708,588,766.80 = 426,476,008.80/x
  3. Step 3: Cross multiply
    472,392,511.20x = 708,588,766.80 × 426,476,008.80
  4. Step 4: Simplify right side
    472,392,511.20x = 302,196,109,145,377,920
  5. Step 5: Solve for x
    x = 302,196,109,145,377,920/472,392,511.20
  6. Step 6: Final answer
    x = 639,714,013.20

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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.