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Finding the Fourth Proportional to 843,172.12, 1,163,572.86 and 480,655

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Solution

The fourth proportional to 843,172.12, 1,163,572.86 and 480,655 is: 663,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,172.12 : 1,163,572.86 = 480,655 : x
  2. Step 2: Convert to fraction form
    843,172.12/1,163,572.86 = 480,655/x
  3. Step 3: Cross multiply
    843,172.12x = 1,163,572.86 × 480,655
  4. Step 4: Simplify right side
    843,172.12x = 559,277,113,023.30
  5. Step 5: Solve for x
    x = 559,277,113,023.30/843,172.12
  6. Step 6: Final answer
    x = 663,301.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.