Home / 860,864.70-1,290,713.85-439,794.30

Finding the Fourth Proportional to 860,864.70, 1,290,713.85 and 439,794.30

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Solution

The fourth proportional to 860,864.70, 1,290,713.85 and 439,794.30 is: 659,393.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,864.70 : 1,290,713.85 = 439,794.30 : x
  2. Step 2: Convert to fraction form
    860,864.70/1,290,713.85 = 439,794.30/x
  3. Step 3: Cross multiply
    860,864.70x = 1,290,713.85 × 439,794.30
  4. Step 4: Simplify right side
    860,864.70x = 567,648,594,161.06
  5. Step 5: Solve for x
    x = 567,648,594,161.06/860,864.70
  6. Step 6: Final answer
    x = 659,393.51

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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.