Home / 765,442.11-1,148,421.47-338,919.71

Finding the Fourth Proportional to 765,442.11, 1,148,421.47 and 338,919.71

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Solution

The fourth proportional to 765,442.11, 1,148,421.47 and 338,919.71 is: 508,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,442.11 : 1,148,421.47 = 338,919.71 : x
  2. Step 2: Convert to fraction form
    765,442.11/1,148,421.47 = 338,919.71/x
  3. Step 3: Cross multiply
    765,442.11x = 1,148,421.47 × 338,919.71
  4. Step 4: Simplify right side
    765,442.11x = 389,222,664,133.47
  5. Step 5: Solve for x
    x = 389,222,664,133.47/765,442.11
  6. Step 6: Final answer
    x = 508,493.93

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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.