Home / 521,004.40-781,506.60-486,012.40

Finding the Fourth Proportional to 521,004.40, 781,506.60 and 486,012.40

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Solution

The fourth proportional to 521,004.40, 781,506.60 and 486,012.40 is: 729,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,004.40 : 781,506.60 = 486,012.40 : x
  2. Step 2: Convert to fraction form
    521,004.40/781,506.60 = 486,012.40/x
  3. Step 3: Cross multiply
    521,004.40x = 781,506.60 × 486,012.40
  4. Step 4: Simplify right side
    521,004.40x = 379,821,898,281.84
  5. Step 5: Solve for x
    x = 379,821,898,281.84/521,004.40
  6. Step 6: Final answer
    x = 729,018.60

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Similar ratio
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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.