Home / 426,348,003.70-639,522,005.55-400,519,971.10

Finding the Fourth Proportional to 426,348,003.70, 639,522,005.55 and 400,519,971.10

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Solution

The fourth proportional to 426,348,003.70, 639,522,005.55 and 400,519,971.10 is: 600,779,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,348,003.70 : 639,522,005.55 = 400,519,971.10 : x
  2. Step 2: Convert to fraction form
    426,348,003.70/639,522,005.55 = 400,519,971.10/x
  3. Step 3: Cross multiply
    426,348,003.70x = 639,522,005.55 × 400,519,971.10
  4. Step 4: Simplify right side
    426,348,003.70x = 256,141,335,180,700,032
  5. Step 5: Solve for x
    x = 256,141,335,180,700,032/426,348,003.70
  6. Step 6: Final answer
    x = 600,779,956.65

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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.