Home / 678,870.20-1,018,305.28-173,432.28

Finding the Fourth Proportional to 678,870.20, 1,018,305.28 and 173,432.28

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Solution

The fourth proportional to 678,870.20, 1,018,305.28 and 173,432.28 is: 260,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,870.20 : 1,018,305.28 = 173,432.28 : x
  2. Step 2: Convert to fraction form
    678,870.20/1,018,305.28 = 173,432.28/x
  3. Step 3: Cross multiply
    678,870.20x = 1,018,305.28 × 173,432.28
  4. Step 4: Simplify right side
    678,870.20x = 176,607,006,012.86
  5. Step 5: Solve for x
    x = 176,607,006,012.86/678,870.20
  6. Step 6: Final answer
    x = 260,148.41

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Similar ratio
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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.