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Finding the Fourth Proportional to 483,987.40, 726,126.90 and 344,019.40

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Solution

The fourth proportional to 483,987.40, 726,126.90 and 344,019.40 is: 516,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,987.40 : 726,126.90 = 344,019.40 : x
  2. Step 2: Convert to fraction form
    483,987.40/726,126.90 = 344,019.40/x
  3. Step 3: Cross multiply
    483,987.40x = 726,126.90 × 344,019.40
  4. Step 4: Simplify right side
    483,987.40x = 249,801,740,461.86
  5. Step 5: Solve for x
    x = 249,801,740,461.86/483,987.40
  6. Step 6: Final answer
    x = 516,132.73

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1.5x scale

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.