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Finding the Fourth Proportional to 564,139.66, 778,581.60 and 322,432.42

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Solution

The fourth proportional to 564,139.66, 778,581.60 and 322,432.42 is: 444,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,139.66 : 778,581.60 = 322,432.42 : x
  2. Step 2: Convert to fraction form
    564,139.66/778,581.60 = 322,432.42/x
  3. Step 3: Cross multiply
    564,139.66x = 778,581.60 × 322,432.42
  4. Step 4: Simplify right side
    564,139.66x = 251,039,949,455.47
  5. Step 5: Solve for x
    x = 251,039,949,455.47/564,139.66
  6. Step 6: Final answer
    x = 444,996.10

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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.