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Finding the Fourth Proportional to 636,728.80, 878,680.82 and 350,242.60

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Solution

The fourth proportional to 636,728.80, 878,680.82 and 350,242.60 is: 483,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,728.80 : 878,680.82 = 350,242.60 : x
  2. Step 2: Convert to fraction form
    636,728.80/878,680.82 = 350,242.60/x
  3. Step 3: Cross multiply
    636,728.80x = 878,680.82 × 350,242.60
  4. Step 4: Simplify right side
    636,728.80x = 307,751,454,966.93
  5. Step 5: Solve for x
    x = 307,751,454,966.93/636,728.80
  6. Step 6: Final answer
    x = 483,332.08

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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.