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Finding the Fourth Proportional to 636,655.91, 878,585.60 and 350,197.79

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Solution

The fourth proportional to 636,655.91, 878,585.60 and 350,197.79 is: 483,273.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,655.91 : 878,585.60 = 350,197.79 : x
  2. Step 2: Convert to fraction form
    636,655.91/878,585.60 = 350,197.79/x
  3. Step 3: Cross multiply
    636,655.91x = 878,585.60 × 350,197.79
  4. Step 4: Simplify right side
    636,655.91x = 307,678,731,928.39
  5. Step 5: Solve for x
    x = 307,678,731,928.39/636,655.91
  6. Step 6: Final answer
    x = 483,273.19

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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.