Home / 521,170.40-781,870.32-296,636.48

Finding the Fourth Proportional to 521,170.40, 781,870.32 and 296,636.48

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Solution

The fourth proportional to 521,170.40, 781,870.32 and 296,636.48 is: 445,020.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,170.40 : 781,870.32 = 296,636.48 : x
  2. Step 2: Convert to fraction form
    521,170.40/781,870.32 = 296,636.48/x
  3. Step 3: Cross multiply
    521,170.40x = 781,870.32 × 296,636.48
  4. Step 4: Simplify right side
    521,170.40x = 231,931,259,541.27
  5. Step 5: Solve for x
    x = 231,931,259,541.27/521,170.40
  6. Step 6: Final answer
    x = 445,020.02

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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.