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Finding the Fourth Proportional to 580,864.60, 871,296.90 and 438,938.20

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Solution

The fourth proportional to 580,864.60, 871,296.90 and 438,938.20 is: 658,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,864.60 : 871,296.90 = 438,938.20 : x
  2. Step 2: Convert to fraction form
    580,864.60/871,296.90 = 438,938.20/x
  3. Step 3: Cross multiply
    580,864.60x = 871,296.90 × 438,938.20
  4. Step 4: Simplify right side
    580,864.60x = 382,445,492,951.58
  5. Step 5: Solve for x
    x = 382,445,492,951.58/580,864.60
  6. Step 6: Final answer
    x = 658,407.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.