Home / 426,096,019.60-639,144,029.40-409,374,509.20

Finding the Fourth Proportional to 426,096,019.60, 639,144,029.40 and 409,374,509.20

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Solution

The fourth proportional to 426,096,019.60, 639,144,029.40 and 409,374,509.20 is: 614,061,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,096,019.60 : 639,144,029.40 = 409,374,509.20 : x
  2. Step 2: Convert to fraction form
    426,096,019.60/639,144,029.40 = 409,374,509.20/x
  3. Step 3: Cross multiply
    426,096,019.60x = 639,144,029.40 × 409,374,509.20
  4. Step 4: Simplify right side
    426,096,019.60x = 261,649,273,343,735,360
  5. Step 5: Solve for x
    x = 261,649,273,343,735,360/426,096,019.60
  6. Step 6: Final answer
    x = 614,061,763.80

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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.