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Finding the Fourth Proportional to 1,382,404, 2,073,724.80 and 385,132

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Solution

The fourth proportional to 1,382,404, 2,073,724.80 and 385,132 is: 577,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,404 : 2,073,724.80 = 385,132 : x
  2. Step 2: Convert to fraction form
    1,382,404/2,073,724.80 = 385,132/x
  3. Step 3: Cross multiply
    1,382,404x = 2,073,724.80 × 385,132
  4. Step 4: Simplify right side
    1,382,404x = 798,657,779,673.60
  5. Step 5: Solve for x
    x = 798,657,779,673.60/1,382,404
  6. Step 6: Final answer
    x = 577,731.10

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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.