Home / 578,005.40-867,008.10-311,628.80

Finding the Fourth Proportional to 578,005.40, 867,008.10 and 311,628.80

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Solution

The fourth proportional to 578,005.40, 867,008.10 and 311,628.80 is: 467,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,005.40 : 867,008.10 = 311,628.80 : x
  2. Step 2: Convert to fraction form
    578,005.40/867,008.10 = 311,628.80/x
  3. Step 3: Cross multiply
    578,005.40x = 867,008.10 × 311,628.80
  4. Step 4: Simplify right side
    578,005.40x = 270,184,693,793.28
  5. Step 5: Solve for x
    x = 270,184,693,793.28/578,005.40
  6. Step 6: Final answer
    x = 467,443.20

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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.