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Finding the Fourth Proportional to 636,340.68, 878,167.08 and 349,868.16

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Solution

The fourth proportional to 636,340.68, 878,167.08 and 349,868.16 is: 482,827.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,340.68 : 878,167.08 = 349,868.16 : x
  2. Step 2: Convert to fraction form
    636,340.68/878,167.08 = 349,868.16/x
  3. Step 3: Cross multiply
    636,340.68x = 878,167.08 × 349,868.16
  4. Step 4: Simplify right side
    636,340.68x = 307,242,700,452.17
  5. Step 5: Solve for x
    x = 307,242,700,452.17/636,340.68
  6. Step 6: Final answer
    x = 482,827.38

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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.