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Finding the Fourth Proportional to 636,695.28, 878,621.14 and 350,215.34

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Solution

The fourth proportional to 636,695.28, 878,621.14 and 350,215.34 is: 483,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,695.28 : 878,621.14 = 350,215.34 : x
  2. Step 2: Convert to fraction form
    636,695.28/878,621.14 = 350,215.34/x
  3. Step 3: Cross multiply
    636,695.28x = 878,621.14 × 350,215.34
  4. Step 4: Simplify right side
    636,695.28x = 307,706,601,276.29
  5. Step 5: Solve for x
    x = 307,706,601,276.29/636,695.28
  6. Step 6: Final answer
    x = 483,287.08

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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.