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Finding the Fourth Proportional to 890,407.96, 1,335,767.46 and 391,759

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Solution

The fourth proportional to 890,407.96, 1,335,767.46 and 391,759 is: 587,706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,407.96 : 1,335,767.46 = 391,759 : x
  2. Step 2: Convert to fraction form
    890,407.96/1,335,767.46 = 391,759/x
  3. Step 3: Cross multiply
    890,407.96x = 1,335,767.46 × 391,759
  4. Step 4: Simplify right side
    890,407.96x = 523,298,924,362.14
  5. Step 5: Solve for x
    x = 523,298,924,362.14/890,407.96
  6. Step 6: Final answer
    x = 587,706.93

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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.