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Finding the Fourth Proportional to 483,985.40, 726,123.90 and 344,017.40

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Solution

The fourth proportional to 483,985.40, 726,123.90 and 344,017.40 is: 516,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,985.40 : 726,123.90 = 344,017.40 : x
  2. Step 2: Convert to fraction form
    483,985.40/726,123.90 = 344,017.40/x
  3. Step 3: Cross multiply
    483,985.40x = 726,123.90 × 344,017.40
  4. Step 4: Simplify right side
    483,985.40x = 249,799,256,155.86
  5. Step 5: Solve for x
    x = 249,799,256,155.86/483,985.40
  6. Step 6: Final answer
    x = 516,129.73

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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.