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Finding the Fourth Proportional to 871,393.48, 1,202,527.80 and 489,420.32

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Solution

The fourth proportional to 871,393.48, 1,202,527.80 and 489,420.32 is: 675,402.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,393.48 : 1,202,527.80 = 489,420.32 : x
  2. Step 2: Convert to fraction form
    871,393.48/1,202,527.80 = 489,420.32/x
  3. Step 3: Cross multiply
    871,393.48x = 1,202,527.80 × 489,420.32
  4. Step 4: Simplify right side
    871,393.48x = 588,541,540,684.90
  5. Step 5: Solve for x
    x = 588,541,540,684.90/871,393.48
  6. Step 6: Final answer
    x = 675,402.74

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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.