Home / 485,890.60-670,841.22-304,850.92

Finding the Fourth Proportional to 485,890.60, 670,841.22 and 304,850.92

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Solution

The fourth proportional to 485,890.60, 670,841.22 and 304,850.92 is: 420,890.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,890.60 : 670,841.22 = 304,850.92 : x
  2. Step 2: Convert to fraction form
    485,890.60/670,841.22 = 304,850.92/x
  3. Step 3: Cross multiply
    485,890.60x = 670,841.22 × 304,850.92
  4. Step 4: Simplify right side
    485,890.60x = 204,506,563,090.92
  5. Step 5: Solve for x
    x = 204,506,563,090.92/485,890.60
  6. Step 6: Final answer
    x = 420,890.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.