Home / 810,638.10-1,118,685.03-443,115.79

Finding the Fourth Proportional to 810,638.10, 1,118,685.03 and 443,115.79

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Solution

The fourth proportional to 810,638.10, 1,118,685.03 and 443,115.79 is: 611,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,638.10 : 1,118,685.03 = 443,115.79 : x
  2. Step 2: Convert to fraction form
    810,638.10/1,118,685.03 = 443,115.79/x
  3. Step 3: Cross multiply
    810,638.10x = 1,118,685.03 × 443,115.79
  4. Step 4: Simplify right side
    810,638.10x = 495,707,000,829.62
  5. Step 5: Solve for x
    x = 495,707,000,829.62/810,638.10
  6. Step 6: Final answer
    x = 611,502.22

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Double scale
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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.