Home / 679,324.40-1,017,820.20-442,545.20

Finding the Fourth Proportional to 679,324.40, 1,017,820.20 and 442,545.20

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Solution

The fourth proportional to 679,324.40, 1,017,820.20 and 442,545.20 is: 663,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,324.40 : 1,017,820.20 = 442,545.20 : x
  2. Step 2: Convert to fraction form
    679,324.40/1,017,820.20 = 442,545.20/x
  3. Step 3: Cross multiply
    679,324.40x = 1,017,820.20 × 442,545.20
  4. Step 4: Simplify right side
    679,324.40x = 450,431,443,973.04
  5. Step 5: Solve for x
    x = 450,431,443,973.04/679,324.40
  6. Step 6: Final answer
    x = 663,057.95

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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.