Home / 815,761.08-1,223,665.74-389,341.85

Finding the Fourth Proportional to 815,761.08, 1,223,665.74 and 389,341.85

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Solution

The fourth proportional to 815,761.08, 1,223,665.74 and 389,341.85 is: 584,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,761.08 : 1,223,665.74 = 389,341.85 : x
  2. Step 2: Convert to fraction form
    815,761.08/1,223,665.74 = 389,341.85/x
  3. Step 3: Cross multiply
    815,761.08x = 1,223,665.74 × 389,341.85
  4. Step 4: Simplify right side
    815,761.08x = 476,424,276,874.89
  5. Step 5: Solve for x
    x = 476,424,276,874.89/815,761.08
  6. Step 6: Final answer
    x = 584,024.28

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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.