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Finding the Fourth Proportional to 563,979.98, 778,304.52 and 309,330.56

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Solution

The fourth proportional to 563,979.98, 778,304.52 and 309,330.56 is: 426,882.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,979.98 : 778,304.52 = 309,330.56 : x
  2. Step 2: Convert to fraction form
    563,979.98/778,304.52 = 309,330.56/x
  3. Step 3: Cross multiply
    563,979.98x = 778,304.52 × 309,330.56
  4. Step 4: Simplify right side
    563,979.98x = 240,753,373,022.13
  5. Step 5: Solve for x
    x = 240,753,373,022.13/563,979.98
  6. Step 6: Final answer
    x = 426,882.84

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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.