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Finding the Fourth Proportional to 860,207.04, 1,290,573 and 439,778.16

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Solution

The fourth proportional to 860,207.04, 1,290,573 and 439,778.16 is: 659,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,207.04 : 1,290,573 = 439,778.16 : x
  2. Step 2: Convert to fraction form
    860,207.04/1,290,573 = 439,778.16/x
  3. Step 3: Cross multiply
    860,207.04x = 1,290,573 × 439,778.16
  4. Step 4: Simplify right side
    860,207.04x = 567,565,819,285.68
  5. Step 5: Solve for x
    x = 567,565,819,285.68/860,207.04
  6. Step 6: Final answer
    x = 659,801.41

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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.