Home / 591,452.76-815,920.29-387,415.38

Finding the Fourth Proportional to 591,452.76, 815,920.29 and 387,415.38

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Solution

The fourth proportional to 591,452.76, 815,920.29 and 387,415.38 is: 534,446.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,452.76 : 815,920.29 = 387,415.38 : x
  2. Step 2: Convert to fraction form
    591,452.76/815,920.29 = 387,415.38/x
  3. Step 3: Cross multiply
    591,452.76x = 815,920.29 × 387,415.38
  4. Step 4: Simplify right side
    591,452.76x = 316,100,069,200.06
  5. Step 5: Solve for x
    x = 316,100,069,200.06/591,452.76
  6. Step 6: Final answer
    x = 534,446.86

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1.5x scale

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.