Home / 426,348,001.20-639,522,001.80-400,519,968.60

Finding the Fourth Proportional to 426,348,001.20, 639,522,001.80 and 400,519,968.60

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Solution

The fourth proportional to 426,348,001.20, 639,522,001.80 and 400,519,968.60 is: 600,779,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,348,001.20 : 639,522,001.80 = 400,519,968.60 : x
  2. Step 2: Convert to fraction form
    426,348,001.20/639,522,001.80 = 400,519,968.60/x
  3. Step 3: Cross multiply
    426,348,001.20x = 639,522,001.80 × 400,519,968.60
  4. Step 4: Simplify right side
    426,348,001.20x = 256,141,332,079,945,152
  5. Step 5: Solve for x
    x = 256,141,332,079,945,152/426,348,001.20
  6. Step 6: Final answer
    x = 600,779,952.90

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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.