Home / 860,853.60-1,291,269.72-387,204.48

Finding the Fourth Proportional to 860,853.60, 1,291,269.72 and 387,204.48

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Solution

The fourth proportional to 860,853.60, 1,291,269.72 and 387,204.48 is: 580,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,853.60 : 1,291,269.72 = 387,204.48 : x
  2. Step 2: Convert to fraction form
    860,853.60/1,291,269.72 = 387,204.48/x
  3. Step 3: Cross multiply
    860,853.60x = 1,291,269.72 × 387,204.48
  4. Step 4: Simplify right side
    860,853.60x = 499,985,420,472.35
  5. Step 5: Solve for x
    x = 499,985,420,472.35/860,853.60
  6. Step 6: Final answer
    x = 580,801.92

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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.