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Finding the Fourth Proportional to 636,085.72, 877,803.78 and 349,612.48

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Solution

The fourth proportional to 636,085.72, 877,803.78 and 349,612.48 is: 482,468.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,085.72 : 877,803.78 = 349,612.48 : x
  2. Step 2: Convert to fraction form
    636,085.72/877,803.78 = 349,612.48/x
  3. Step 3: Cross multiply
    636,085.72x = 877,803.78 × 349,612.48
  4. Step 4: Simplify right side
    636,085.72x = 306,891,156,479.17
  5. Step 5: Solve for x
    x = 306,891,156,479.17/636,085.72
  6. Step 6: Final answer
    x = 482,468.24

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Double scale
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Similar ratio
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1.5x scale

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.