Home / 591,203.79-815,861.18-319,271.69

Finding the Fourth Proportional to 591,203.79, 815,861.18 and 319,271.69

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Solution

The fourth proportional to 591,203.79, 815,861.18 and 319,271.69 is: 440,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,203.79 : 815,861.18 = 319,271.69 : x
  2. Step 2: Convert to fraction form
    591,203.79/815,861.18 = 319,271.69/x
  3. Step 3: Cross multiply
    591,203.79x = 815,861.18 × 319,271.69
  4. Step 4: Simplify right side
    591,203.79x = 260,481,380,581.83
  5. Step 5: Solve for x
    x = 260,481,380,581.83/591,203.79
  6. Step 6: Final answer
    x = 440,594.91

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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.