Home / 626,877.20-940,315.80-311,949.20

Finding the Fourth Proportional to 626,877.20, 940,315.80 and 311,949.20

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Solution

The fourth proportional to 626,877.20, 940,315.80 and 311,949.20 is: 467,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,877.20 : 940,315.80 = 311,949.20 : x
  2. Step 2: Convert to fraction form
    626,877.20/940,315.80 = 311,949.20/x
  3. Step 3: Cross multiply
    626,877.20x = 940,315.80 × 311,949.20
  4. Step 4: Simplify right side
    626,877.20x = 293,330,761,557.36
  5. Step 5: Solve for x
    x = 293,330,761,557.36/626,877.20
  6. Step 6: Final answer
    x = 467,923.80

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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.