Home / 478,807.20-661,023.72-317,882.07

Finding the Fourth Proportional to 478,807.20, 661,023.72 and 317,882.07

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Solution

The fourth proportional to 478,807.20, 661,023.72 and 317,882.07 is: 438,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,807.20 : 661,023.72 = 317,882.07 : x
  2. Step 2: Convert to fraction form
    478,807.20/661,023.72 = 317,882.07/x
  3. Step 3: Cross multiply
    478,807.20x = 661,023.72 × 317,882.07
  4. Step 4: Simplify right side
    478,807.20x = 210,127,588,432.70
  5. Step 5: Solve for x
    x = 210,127,588,432.70/478,807.20
  6. Step 6: Final answer
    x = 438,856.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.