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Finding the Fourth Proportional to 406,124.90, 609,244.95 and 125,612.90

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Solution

The fourth proportional to 406,124.90, 609,244.95 and 125,612.90 is: 188,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,124.90 : 609,244.95 = 125,612.90 : x
  2. Step 2: Convert to fraction form
    406,124.90/609,244.95 = 125,612.90/x
  3. Step 3: Cross multiply
    406,124.90x = 609,244.95 × 125,612.90
  4. Step 4: Simplify right side
    406,124.90x = 76,529,024,979.86
  5. Step 5: Solve for x
    x = 76,529,024,979.86/406,124.90
  6. Step 6: Final answer
    x = 188,437.17

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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.