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Finding the Fourth Proportional to 406,510.80, 609,766.20 and 126,056.40

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Solution

The fourth proportional to 406,510.80, 609,766.20 and 126,056.40 is: 189,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,510.80 : 609,766.20 = 126,056.40 : x
  2. Step 2: Convert to fraction form
    406,510.80/609,766.20 = 126,056.40/x
  3. Step 3: Cross multiply
    406,510.80x = 609,766.20 × 126,056.40
  4. Step 4: Simplify right side
    406,510.80x = 76,864,932,013.68
  5. Step 5: Solve for x
    x = 76,864,932,013.68/406,510.80
  6. Step 6: Final answer
    x = 189,084.60

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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.