Home / 425,570,301.20-637,431,663-261,309,455.12

Finding the Fourth Proportional to 425,570,301.20, 637,431,663 and 261,309,455.12

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Solution

The fourth proportional to 425,570,301.20, 637,431,663 and 261,309,455.12 is: 391,396,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,570,301.20 : 637,431,663 = 261,309,455.12 : x
  2. Step 2: Convert to fraction form
    425,570,301.20/637,431,663 = 261,309,455.12/x
  3. Step 3: Cross multiply
    425,570,301.20x = 637,431,663 × 261,309,455.12
  4. Step 4: Simplify right side
    425,570,301.20x = 166,566,920,534,765,472
  5. Step 5: Solve for x
    x = 166,566,920,534,765,472/425,570,301.20
  6. Step 6: Final answer
    x = 391,396,956.19

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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.