Home / 426,348,004.70-639,522,007.05-400,519,972.10

Finding the Fourth Proportional to 426,348,004.70, 639,522,007.05 and 400,519,972.10

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Solution

The fourth proportional to 426,348,004.70, 639,522,007.05 and 400,519,972.10 is: 600,779,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,348,004.70 : 639,522,007.05 = 400,519,972.10 : x
  2. Step 2: Convert to fraction form
    426,348,004.70/639,522,007.05 = 400,519,972.10/x
  3. Step 3: Cross multiply
    426,348,004.70x = 639,522,007.05 × 400,519,972.10
  4. Step 4: Simplify right side
    426,348,004.70x = 256,141,336,421,001,984
  5. Step 5: Solve for x
    x = 256,141,336,421,001,984/426,348,004.70
  6. Step 6: Final answer
    x = 600,779,958.15

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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.