Home / 860,106.54-1,290,422.34-439,677.66

Finding the Fourth Proportional to 860,106.54, 1,290,422.34 and 439,677.66

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Solution

The fourth proportional to 860,106.54, 1,290,422.34 and 439,677.66 is: 659,650.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,106.54 : 1,290,422.34 = 439,677.66 : x
  2. Step 2: Convert to fraction form
    860,106.54/1,290,422.34 = 439,677.66/x
  3. Step 3: Cross multiply
    860,106.54x = 1,290,422.34 × 439,677.66
  4. Step 4: Simplify right side
    860,106.54x = 567,369,874,862.93
  5. Step 5: Solve for x
    x = 567,369,874,862.93/860,106.54
  6. Step 6: Final answer
    x = 659,650.69

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1.5x scale

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.