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Finding the Fourth Proportional to 636,549.32, 878,420.52 and 350,069.40

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Solution

The fourth proportional to 636,549.32, 878,420.52 and 350,069.40 is: 483,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,549.32 : 878,420.52 = 350,069.40 : x
  2. Step 2: Convert to fraction form
    636,549.32/878,420.52 = 350,069.40/x
  3. Step 3: Cross multiply
    636,549.32x = 878,420.52 × 350,069.40
  4. Step 4: Simplify right side
    636,549.32x = 307,508,144,384.09
  5. Step 5: Solve for x
    x = 307,508,144,384.09/636,549.32
  6. Step 6: Final answer
    x = 483,086.13

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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.