Home / 636,787.30-878,748.09-350,307.46

Finding the Fourth Proportional to 636,787.30, 878,748.09 and 350,307.46

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Solution

The fourth proportional to 636,787.30, 878,748.09 and 350,307.46 is: 483,414.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,787.30 : 878,748.09 = 350,307.46 : x
  2. Step 2: Convert to fraction form
    636,787.30/878,748.09 = 350,307.46/x
  3. Step 3: Cross multiply
    636,787.30x = 878,748.09 × 350,307.46
  4. Step 4: Simplify right side
    636,787.30x = 307,832,011,387.75
  5. Step 5: Solve for x
    x = 307,832,011,387.75/636,787.30
  6. Step 6: Final answer
    x = 483,414.18

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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.