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Finding the Fourth Proportional to 404,420.60, 606,630.90 and 123,901.40

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Solution

The fourth proportional to 404,420.60, 606,630.90 and 123,901.40 is: 185,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,420.60 : 606,630.90 = 123,901.40 : x
  2. Step 2: Convert to fraction form
    404,420.60/606,630.90 = 123,901.40/x
  3. Step 3: Cross multiply
    404,420.60x = 606,630.90 × 123,901.40
  4. Step 4: Simplify right side
    404,420.60x = 75,162,417,793.26
  5. Step 5: Solve for x
    x = 75,162,417,793.26/404,420.60
  6. Step 6: Final answer
    x = 185,852.10

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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.