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Finding the Fourth Proportional to 636,728.30, 878,680.14 and 350,242.10

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Solution

The fourth proportional to 636,728.30, 878,680.14 and 350,242.10 is: 483,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,728.30 : 878,680.14 = 350,242.10 : x
  2. Step 2: Convert to fraction form
    636,728.30/878,680.14 = 350,242.10/x
  3. Step 3: Cross multiply
    636,728.30x = 878,680.14 × 350,242.10
  4. Step 4: Simplify right side
    636,728.30x = 307,750,777,461.89
  5. Step 5: Solve for x
    x = 307,750,777,461.89/636,728.30
  6. Step 6: Final answer
    x = 483,331.39

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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.