Home / 426,096,315.60-639,144,473.40-409,374,805.20

Finding the Fourth Proportional to 426,096,315.60, 639,144,473.40 and 409,374,805.20

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Solution

The fourth proportional to 426,096,315.60, 639,144,473.40 and 409,374,805.20 is: 614,062,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,096,315.60 : 639,144,473.40 = 409,374,805.20 : x
  2. Step 2: Convert to fraction form
    426,096,315.60/639,144,473.40 = 409,374,805.20/x
  3. Step 3: Cross multiply
    426,096,315.60x = 639,144,473.40 × 409,374,805.20
  4. Step 4: Simplify right side
    426,096,315.60x = 261,649,644,292,781,568
  5. Step 5: Solve for x
    x = 261,649,644,292,781,568/426,096,315.60
  6. Step 6: Final answer
    x = 614,062,207.80

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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.