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Finding the Fourth Proportional to 636,111.20, 877,832.16 and 349,630.40

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Solution

The fourth proportional to 636,111.20, 877,832.16 and 349,630.40 is: 482,489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,111.20 : 877,832.16 = 349,630.40 : x
  2. Step 2: Convert to fraction form
    636,111.20/877,832.16 = 349,630.40/x
  3. Step 3: Cross multiply
    636,111.20x = 877,832.16 × 349,630.40
  4. Step 4: Simplify right side
    636,111.20x = 306,916,809,233.66
  5. Step 5: Solve for x
    x = 306,916,809,233.66/636,111.20
  6. Step 6: Final answer
    x = 482,489.24

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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.