Home / 626,617.20-939,925.80-311,689.20

Finding the Fourth Proportional to 626,617.20, 939,925.80 and 311,689.20

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Solution

The fourth proportional to 626,617.20, 939,925.80 and 311,689.20 is: 467,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,617.20 : 939,925.80 = 311,689.20 : x
  2. Step 2: Convert to fraction form
    626,617.20/939,925.80 = 311,689.20/x
  3. Step 3: Cross multiply
    626,617.20x = 939,925.80 × 311,689.20
  4. Step 4: Simplify right side
    626,617.20x = 292,964,720,661.36
  5. Step 5: Solve for x
    x = 292,964,720,661.36/626,617.20
  6. Step 6: Final answer
    x = 467,533.80

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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.