Home / 591,500.64-815,421.24-421,439.52

Finding the Fourth Proportional to 591,500.64, 815,421.24 and 421,439.52

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Solution

The fourth proportional to 591,500.64, 815,421.24 and 421,439.52 is: 580,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,500.64 : 815,421.24 = 421,439.52 : x
  2. Step 2: Convert to fraction form
    591,500.64/815,421.24 = 421,439.52/x
  3. Step 3: Cross multiply
    591,500.64x = 815,421.24 × 421,439.52
  4. Step 4: Simplify right side
    591,500.64x = 343,650,735,983.41
  5. Step 5: Solve for x
    x = 343,650,735,983.41/591,500.64
  6. Step 6: Final answer
    x = 580,981.17

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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.