Home / 693,430.80-1,040,328.45-220,115.40

Finding the Fourth Proportional to 693,430.80, 1,040,328.45 and 220,115.40

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Solution

The fourth proportional to 693,430.80, 1,040,328.45 and 220,115.40 is: 330,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,430.80 : 1,040,328.45 = 220,115.40 : x
  2. Step 2: Convert to fraction form
    693,430.80/1,040,328.45 = 220,115.40/x
  3. Step 3: Cross multiply
    693,430.80x = 1,040,328.45 × 220,115.40
  4. Step 4: Simplify right side
    693,430.80x = 228,992,312,903.13
  5. Step 5: Solve for x
    x = 228,992,312,903.13/693,430.80
  6. Step 6: Final answer
    x = 330,230.95

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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.