Home / 815,695.18-1,125,839.40-453,243.64

Finding the Fourth Proportional to 815,695.18, 1,125,839.40 and 453,243.64

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Solution

The fourth proportional to 815,695.18, 1,125,839.40 and 453,243.64 is: 625,576.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,695.18 : 1,125,839.40 = 453,243.64 : x
  2. Step 2: Convert to fraction form
    815,695.18/1,125,839.40 = 453,243.64/x
  3. Step 3: Cross multiply
    815,695.18x = 1,125,839.40 × 453,243.64
  4. Step 4: Simplify right side
    815,695.18x = 510,279,547,711.42
  5. Step 5: Solve for x
    x = 510,279,547,711.42/815,695.18
  6. Step 6: Final answer
    x = 625,576.27

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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.