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Finding the Fourth Proportional to 406,026.80, 609,040.20 and 125,572.40

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Solution

The fourth proportional to 406,026.80, 609,040.20 and 125,572.40 is: 188,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,026.80 : 609,040.20 = 125,572.40 : x
  2. Step 2: Convert to fraction form
    406,026.80/609,040.20 = 125,572.40/x
  3. Step 3: Cross multiply
    406,026.80x = 609,040.20 × 125,572.40
  4. Step 4: Simplify right side
    406,026.80x = 76,478,639,610.48
  5. Step 5: Solve for x
    x = 76,478,639,610.48/406,026.80
  6. Step 6: Final answer
    x = 188,358.60

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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.