Home / 871,410.30-1,202,658.98-489,437.07

Finding the Fourth Proportional to 871,410.30, 1,202,658.98 and 489,437.07

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Solution

The fourth proportional to 871,410.30, 1,202,658.98 and 489,437.07 is: 675,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,410.30 : 1,202,658.98 = 489,437.07 : x
  2. Step 2: Convert to fraction form
    871,410.30/1,202,658.98 = 489,437.07/x
  3. Step 3: Cross multiply
    871,410.30x = 1,202,658.98 × 489,437.07
  4. Step 4: Simplify right side
    871,410.30x = 588,625,887,380.39
  5. Step 5: Solve for x
    x = 588,625,887,380.39/871,410.30
  6. Step 6: Final answer
    x = 675,486.49

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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.