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Finding the Fourth Proportional to 591,038.80, 885,310.20 and 391,454.80

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Solution

The fourth proportional to 591,038.80, 885,310.20 and 391,454.80 is: 586,355.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,038.80 : 885,310.20 = 391,454.80 : x
  2. Step 2: Convert to fraction form
    591,038.80/885,310.20 = 391,454.80/x
  3. Step 3: Cross multiply
    591,038.80x = 885,310.20 × 391,454.80
  4. Step 4: Simplify right side
    591,038.80x = 346,558,927,278.96
  5. Step 5: Solve for x
    x = 346,558,927,278.96/591,038.80
  6. Step 6: Final answer
    x = 586,355.63

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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.