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Finding the Fourth Proportional to 486,505.10, 729,101.55 and 326,125.10

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Solution

The fourth proportional to 486,505.10, 729,101.55 and 326,125.10 is: 488,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,505.10 : 729,101.55 = 326,125.10 : x
  2. Step 2: Convert to fraction form
    486,505.10/729,101.55 = 326,125.10/x
  3. Step 3: Cross multiply
    486,505.10x = 729,101.55 × 326,125.10
  4. Step 4: Simplify right side
    486,505.10x = 237,778,315,903.91
  5. Step 5: Solve for x
    x = 237,778,315,903.91/486,505.10
  6. Step 6: Final answer
    x = 488,747.84

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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.