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Finding the Fourth Proportional to 763,015, 1,144,726.62 and 264,379

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Solution

The fourth proportional to 763,015, 1,144,726.62 and 264,379 is: 396,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,015 : 1,144,726.62 = 264,379 : x
  2. Step 2: Convert to fraction form
    763,015/1,144,726.62 = 264,379/x
  3. Step 3: Cross multiply
    763,015x = 1,144,726.62 × 264,379
  4. Step 4: Simplify right side
    763,015x = 302,641,679,068.98
  5. Step 5: Solve for x
    x = 302,641,679,068.98/763,015
  6. Step 6: Final answer
    x = 396,639.23

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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.