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Finding the Fourth Proportional to 762,650,687.12, 1,143,805,788.12 and 353,653,693.52

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Solution

The fourth proportional to 762,650,687.12, 1,143,805,788.12 and 353,653,693.52 is: 530,401,596.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,650,687.12 : 1,143,805,788.12 = 353,653,693.52 : x
  2. Step 2: Convert to fraction form
    762,650,687.12/1,143,805,788.12 = 353,653,693.52/x
  3. Step 3: Cross multiply
    762,650,687.12x = 1,143,805,788.12 × 353,653,693.52
  4. Step 4: Simplify right side
    762,650,687.12x = 404,511,141,638,192,448
  5. Step 5: Solve for x
    x = 404,511,141,638,192,448/762,650,687.12
  6. Step 6: Final answer
    x = 530,401,596.00

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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.