Home / 729,143.40-1,093,715.10-255,657.90

Finding the Fourth Proportional to 729,143.40, 1,093,715.10 and 255,657.90

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Solution

The fourth proportional to 729,143.40, 1,093,715.10 and 255,657.90 is: 383,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,143.40 : 1,093,715.10 = 255,657.90 : x
  2. Step 2: Convert to fraction form
    729,143.40/1,093,715.10 = 255,657.90/x
  3. Step 3: Cross multiply
    729,143.40x = 1,093,715.10 × 255,657.90
  4. Step 4: Simplify right side
    729,143.40x = 279,616,905,664.29
  5. Step 5: Solve for x
    x = 279,616,905,664.29/729,143.40
  6. Step 6: Final answer
    x = 383,486.85

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Double scale
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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.