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Finding the Fourth Proportional to 891,270, 1,229,952.60 and 488,853.36

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Solution

The fourth proportional to 891,270, 1,229,952.60 and 488,853.36 is: 674,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,270 : 1,229,952.60 = 488,853.36 : x
  2. Step 2: Convert to fraction form
    891,270/1,229,952.60 = 488,853.36/x
  3. Step 3: Cross multiply
    891,270x = 1,229,952.60 × 488,853.36
  4. Step 4: Simplify right side
    891,270x = 601,266,461,150.74
  5. Step 5: Solve for x
    x = 601,266,461,150.74/891,270
  6. Step 6: Final answer
    x = 674,617.64

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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.