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Finding the Fourth Proportional to 406,041.80, 609,062.70 and 280,070.60

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Solution

The fourth proportional to 406,041.80, 609,062.70 and 280,070.60 is: 420,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,041.80 : 609,062.70 = 280,070.60 : x
  2. Step 2: Convert to fraction form
    406,041.80/609,062.70 = 280,070.60/x
  3. Step 3: Cross multiply
    406,041.80x = 609,062.70 × 280,070.60
  4. Step 4: Simplify right side
    406,041.80x = 170,580,555,826.62
  5. Step 5: Solve for x
    x = 170,580,555,826.62/406,041.80
  6. Step 6: Final answer
    x = 420,105.90

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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.