Home / 815,302.34-1,123,265.84-630,906.78

Finding the Fourth Proportional to 815,302.34, 1,123,265.84 and 630,906.78

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Solution

The fourth proportional to 815,302.34, 1,123,265.84 and 630,906.78 is: 869,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,302.34 : 1,123,265.84 = 630,906.78 : x
  2. Step 2: Convert to fraction form
    815,302.34/1,123,265.84 = 630,906.78/x
  3. Step 3: Cross multiply
    815,302.34x = 1,123,265.84 × 630,906.78
  4. Step 4: Simplify right side
    815,302.34x = 708,676,034,198.40
  5. Step 5: Solve for x
    x = 708,676,034,198.40/815,302.34
  6. Step 6: Final answer
    x = 869,218.69

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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.