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Finding the Fourth Proportional to 539,442.12, 744,426.47 and 297,724.69

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Solution

The fourth proportional to 539,442.12, 744,426.47 and 297,724.69 is: 410,858.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,442.12 : 744,426.47 = 297,724.69 : x
  2. Step 2: Convert to fraction form
    539,442.12/744,426.47 = 297,724.69/x
  3. Step 3: Cross multiply
    539,442.12x = 744,426.47 × 297,724.69
  4. Step 4: Simplify right side
    539,442.12x = 221,634,138,519.92
  5. Step 5: Solve for x
    x = 221,634,138,519.92/539,442.12
  6. Step 6: Final answer
    x = 410,858.05

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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.