Home / 426,264,760.20-639,397,140.30-262,687,220.40

Finding the Fourth Proportional to 426,264,760.20, 639,397,140.30 and 262,687,220.40

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Solution

The fourth proportional to 426,264,760.20, 639,397,140.30 and 262,687,220.40 is: 394,030,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,264,760.20 : 639,397,140.30 = 262,687,220.40 : x
  2. Step 2: Convert to fraction form
    426,264,760.20/639,397,140.30 = 262,687,220.40/x
  3. Step 3: Cross multiply
    426,264,760.20x = 639,397,140.30 × 262,687,220.40
  4. Step 4: Simplify right side
    426,264,760.20x = 167,961,457,517,115,808
  5. Step 5: Solve for x
    x = 167,961,457,517,115,808/426,264,760.20
  6. Step 6: Final answer
    x = 394,030,830.60

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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.