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Finding the Fourth Proportional to 636,407, 878,219.18 and 349,925.08

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Solution

The fourth proportional to 636,407, 878,219.18 and 349,925.08 is: 482,884.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,407 : 878,219.18 = 349,925.08 : x
  2. Step 2: Convert to fraction form
    636,407/878,219.18 = 349,925.08/x
  3. Step 3: Cross multiply
    636,407x = 878,219.18 × 349,925.08
  4. Step 4: Simplify right side
    636,407x = 307,310,916,819.03
  5. Step 5: Solve for x
    x = 307,310,916,819.03/636,407
  6. Step 6: Final answer
    x = 482,884.25

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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.