Home / 626,475.20-939,712.80-311,547.20

Finding the Fourth Proportional to 626,475.20, 939,712.80 and 311,547.20

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Solution

The fourth proportional to 626,475.20, 939,712.80 and 311,547.20 is: 467,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,475.20 : 939,712.80 = 311,547.20 : x
  2. Step 2: Convert to fraction form
    626,475.20/939,712.80 = 311,547.20/x
  3. Step 3: Cross multiply
    626,475.20x = 939,712.80 × 311,547.20
  4. Step 4: Simplify right side
    626,475.20x = 292,764,891,644.16
  5. Step 5: Solve for x
    x = 292,764,891,644.16/626,475.20
  6. Step 6: Final answer
    x = 467,320.80

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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.