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Finding the Fourth Proportional to 539,929.72, 745,198.41 and 310,468.87

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Solution

The fourth proportional to 539,929.72, 745,198.41 and 310,468.87 is: 428,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,929.72 : 745,198.41 = 310,468.87 : x
  2. Step 2: Convert to fraction form
    539,929.72/745,198.41 = 310,468.87/x
  3. Step 3: Cross multiply
    539,929.72x = 745,198.41 × 310,468.87
  4. Step 4: Simplify right side
    539,929.72x = 231,360,908,278.50
  5. Step 5: Solve for x
    x = 231,360,908,278.50/539,929.72
  6. Step 6: Final answer
    x = 428,501.90

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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.