Home / 860,433.40-1,290,650.10-545,246.20

Finding the Fourth Proportional to 860,433.40, 1,290,650.10 and 545,246.20

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Solution

The fourth proportional to 860,433.40, 1,290,650.10 and 545,246.20 is: 817,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,433.40 : 1,290,650.10 = 545,246.20 : x
  2. Step 2: Convert to fraction form
    860,433.40/1,290,650.10 = 545,246.20/x
  3. Step 3: Cross multiply
    860,433.40x = 1,290,650.10 × 545,246.20
  4. Step 4: Simplify right side
    860,433.40x = 703,722,062,554.62
  5. Step 5: Solve for x
    x = 703,722,062,554.62/860,433.40
  6. Step 6: Final answer
    x = 817,869.30

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Double scale
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Similar ratio
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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.