Home / 521,111.70-781,667.55-403,013.70

Finding the Fourth Proportional to 521,111.70, 781,667.55 and 403,013.70

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Solution

The fourth proportional to 521,111.70, 781,667.55 and 403,013.70 is: 604,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,111.70 : 781,667.55 = 403,013.70 : x
  2. Step 2: Convert to fraction form
    521,111.70/781,667.55 = 403,013.70/x
  3. Step 3: Cross multiply
    521,111.70x = 781,667.55 × 403,013.70
  4. Step 4: Simplify right side
    521,111.70x = 315,022,731,495.44
  5. Step 5: Solve for x
    x = 315,022,731,495.44/521,111.70
  6. Step 6: Final answer
    x = 604,520.55

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Similar ratio
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1.5x scale

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.