Home / 871,404.43-1,202,650.88-489,431.20

Finding the Fourth Proportional to 871,404.43, 1,202,650.88 and 489,431.20

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Solution

The fourth proportional to 871,404.43, 1,202,650.88 and 489,431.20 is: 675,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,404.43 : 1,202,650.88 = 489,431.20 : x
  2. Step 2: Convert to fraction form
    871,404.43/1,202,650.88 = 489,431.20/x
  3. Step 3: Cross multiply
    871,404.43x = 1,202,650.88 × 489,431.20
  4. Step 4: Simplify right side
    871,404.43x = 588,614,857,925.67
  5. Step 5: Solve for x
    x = 588,614,857,925.67/871,404.43
  6. Step 6: Final answer
    x = 675,478.39

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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.