Home / 426,096,426.60-639,144,639.90-409,374,916.20

Finding the Fourth Proportional to 426,096,426.60, 639,144,639.90 and 409,374,916.20

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Solution

The fourth proportional to 426,096,426.60, 639,144,639.90 and 409,374,916.20 is: 614,062,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,096,426.60 : 639,144,639.90 = 409,374,916.20 : x
  2. Step 2: Convert to fraction form
    426,096,426.60/639,144,639.90 = 409,374,916.20/x
  3. Step 3: Cross multiply
    426,096,426.60x = 639,144,639.90 × 409,374,916.20
  4. Step 4: Simplify right side
    426,096,426.60x = 261,649,783,398,741,664
  5. Step 5: Solve for x
    x = 261,649,783,398,741,664/426,096,426.60
  6. Step 6: Final answer
    x = 614,062,374.30

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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.