Home / 549,139.80-822,834.90-407,422.20

Finding the Fourth Proportional to 549,139.80, 822,834.90 and 407,422.20

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Solution

The fourth proportional to 549,139.80, 822,834.90 and 407,422.20 is: 610,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,139.80 : 822,834.90 = 407,422.20 : x
  2. Step 2: Convert to fraction form
    549,139.80/822,834.90 = 407,422.20/x
  3. Step 3: Cross multiply
    549,139.80x = 822,834.90 × 407,422.20
  4. Step 4: Simplify right side
    549,139.80x = 335,241,205,194.78
  5. Step 5: Solve for x
    x = 335,241,205,194.78/549,139.80
  6. Step 6: Final answer
    x = 610,484.26

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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.