Home / 821,498.20-1,230,173.70-539,488.60

Finding the Fourth Proportional to 821,498.20, 1,230,173.70 and 539,488.60

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Solution

The fourth proportional to 821,498.20, 1,230,173.70 and 539,488.60 is: 807,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,498.20 : 1,230,173.70 = 539,488.60 : x
  2. Step 2: Convert to fraction form
    821,498.20/1,230,173.70 = 539,488.60/x
  3. Step 3: Cross multiply
    821,498.20x = 1,230,173.70 × 539,488.60
  4. Step 4: Simplify right side
    821,498.20x = 663,664,687,169.82
  5. Step 5: Solve for x
    x = 663,664,687,169.82/821,498.20
  6. Step 6: Final answer
    x = 807,871.14

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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.