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Finding the Fourth Proportional to 636,739.18, 878,685.42 and 350,253.16

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Solution

The fourth proportional to 636,739.18, 878,685.42 and 350,253.16 is: 483,341.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,739.18 : 878,685.42 = 350,253.16 : x
  2. Step 2: Convert to fraction form
    636,739.18/878,685.42 = 350,253.16/x
  3. Step 3: Cross multiply
    636,739.18x = 878,685.42 × 350,253.16
  4. Step 4: Simplify right side
    636,739.18x = 307,762,345,000.93
  5. Step 5: Solve for x
    x = 307,762,345,000.93/636,739.18
  6. Step 6: Final answer
    x = 483,341.30

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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.