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Finding the Fourth Proportional to 636,352.65, 878,114.61 and 374,666.56

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Solution

The fourth proportional to 636,352.65, 878,114.61 and 374,666.56 is: 517,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,352.65 : 878,114.61 = 374,666.56 : x
  2. Step 2: Convert to fraction form
    636,352.65/878,114.61 = 374,666.56/x
  3. Step 3: Cross multiply
    636,352.65x = 878,114.61 × 374,666.56
  4. Step 4: Simplify right side
    636,352.65x = 329,000,178,019.16
  5. Step 5: Solve for x
    x = 329,000,178,019.16/636,352.65
  6. Step 6: Final answer
    x = 517,009.21

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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.