Home / 639,387,472.12-882,354,356.88-360,931,400.44

Finding the Fourth Proportional to 639,387,472.12, 882,354,356.88 and 360,931,400.44

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Solution

The fourth proportional to 639,387,472.12, 882,354,356.88 and 360,931,400.44 is: 498,085,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,387,472.12 : 882,354,356.88 = 360,931,400.44 : x
  2. Step 2: Convert to fraction form
    639,387,472.12/882,354,356.88 = 360,931,400.44/x
  3. Step 3: Cross multiply
    639,387,472.12x = 882,354,356.88 × 360,931,400.44
  4. Step 4: Simplify right side
    639,387,472.12x = 318,469,393,713,033,920
  5. Step 5: Solve for x
    x = 318,469,393,713,033,920/639,387,472.12
  6. Step 6: Final answer
    x = 498,085,132.41

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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.