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Finding the Fourth Proportional to 488,347.78, 732,697.85 and 260,403.65

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Solution

The fourth proportional to 488,347.78, 732,697.85 and 260,403.65 is: 390,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,347.78 : 732,697.85 = 260,403.65 : x
  2. Step 2: Convert to fraction form
    488,347.78/732,697.85 = 260,403.65/x
  3. Step 3: Cross multiply
    488,347.78x = 732,697.85 × 260,403.65
  4. Step 4: Simplify right side
    488,347.78x = 190,797,195,016.88
  5. Step 5: Solve for x
    x = 190,797,195,016.88/488,347.78
  6. Step 6: Final answer
    x = 390,699.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.