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Finding the Fourth Proportional to 763,083, 1,143,128.04 and 442,561.52

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Solution

The fourth proportional to 763,083, 1,143,128.04 and 442,561.52 is: 662,974.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,083 : 1,143,128.04 = 442,561.52 : x
  2. Step 2: Convert to fraction form
    763,083/1,143,128.04 = 442,561.52/x
  3. Step 3: Cross multiply
    763,083x = 1,143,128.04 × 442,561.52
  4. Step 4: Simplify right side
    763,083x = 505,904,482,937.02
  5. Step 5: Solve for x
    x = 505,904,482,937.02/763,083
  6. Step 6: Final answer
    x = 662,974.39

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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.