Home / 985,170.72-1,359,508.40-555,447.12

Finding the Fourth Proportional to 985,170.72, 1,359,508.40 and 555,447.12

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Solution

The fourth proportional to 985,170.72, 1,359,508.40 and 555,447.12 is: 766,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,170.72 : 1,359,508.40 = 555,447.12 : x
  2. Step 2: Convert to fraction form
    985,170.72/1,359,508.40 = 555,447.12/x
  3. Step 3: Cross multiply
    985,170.72x = 1,359,508.40 × 555,447.12
  4. Step 4: Simplify right side
    985,170.72x = 755,135,025,395.81
  5. Step 5: Solve for x
    x = 755,135,025,395.81/985,170.72
  6. Step 6: Final answer
    x = 766,501.69

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.