Home / 880,778.20-1,215,433.30-498,807.76

Finding the Fourth Proportional to 880,778.20, 1,215,433.30 and 498,807.76

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Solution

The fourth proportional to 880,778.20, 1,215,433.30 and 498,807.76 is: 688,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,778.20 : 1,215,433.30 = 498,807.76 : x
  2. Step 2: Convert to fraction form
    880,778.20/1,215,433.30 = 498,807.76/x
  3. Step 3: Cross multiply
    880,778.20x = 1,215,433.30 × 498,807.76
  4. Step 4: Simplify right side
    880,778.20x = 606,267,561,802.41
  5. Step 5: Solve for x
    x = 606,267,561,802.41/880,778.20
  6. Step 6: Final answer
    x = 688,331.71

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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.