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Finding the Fourth Proportional to 882,723, 1,218,177.18 and 480,315

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Solution

The fourth proportional to 882,723, 1,218,177.18 and 480,315 is: 662,845.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,723 : 1,218,177.18 = 480,315 : x
  2. Step 2: Convert to fraction form
    882,723/1,218,177.18 = 480,315/x
  3. Step 3: Cross multiply
    882,723x = 1,218,177.18 × 480,315
  4. Step 4: Simplify right side
    882,723x = 585,108,772,211.70
  5. Step 5: Solve for x
    x = 585,108,772,211.70/882,723
  6. Step 6: Final answer
    x = 662,845.28

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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.