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Finding the Fourth Proportional to 404,909.60, 607,378.80 and 124,426.40

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Solution

The fourth proportional to 404,909.60, 607,378.80 and 124,426.40 is: 186,644.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,909.60 : 607,378.80 = 124,426.40 : x
  2. Step 2: Convert to fraction form
    404,909.60/607,378.80 = 124,426.40/x
  3. Step 3: Cross multiply
    404,909.60x = 607,378.80 × 124,426.40
  4. Step 4: Simplify right side
    404,909.60x = 75,573,957,520.32
  5. Step 5: Solve for x
    x = 75,573,957,520.32/404,909.60
  6. Step 6: Final answer
    x = 186,644.03

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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.