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Finding the Fourth Proportional to 1,285,320, 1,773,002.88 and 801,652.80

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Solution

The fourth proportional to 1,285,320, 1,773,002.88 and 801,652.80 is: 1,105,820.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,320 : 1,773,002.88 = 801,652.80 : x
  2. Step 2: Convert to fraction form
    1,285,320/1,773,002.88 = 801,652.80/x
  3. Step 3: Cross multiply
    1,285,320x = 1,773,002.88 × 801,652.80
  4. Step 4: Simplify right side
    1,285,320x = 1,421,332,723,160.06
  5. Step 5: Solve for x
    x = 1,421,332,723,160.06/1,285,320
  6. Step 6: Final answer
    x = 1,105,820.13

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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.