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Finding the Fourth Proportional to 1,017,965.20, 1,526,947.80 and 994,637.20

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Solution

The fourth proportional to 1,017,965.20, 1,526,947.80 and 994,637.20 is: 1,491,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017,965.20 : 1,526,947.80 = 994,637.20 : x
  2. Step 2: Convert to fraction form
    1,017,965.20/1,526,947.80 = 994,637.20/x
  3. Step 3: Cross multiply
    1,017,965.20x = 1,526,947.80 × 994,637.20
  4. Step 4: Simplify right side
    1,017,965.20x = 1,518,759,084,338.16
  5. Step 5: Solve for x
    x = 1,518,759,084,338.16/1,017,965.20
  6. Step 6: Final answer
    x = 1,491,955.80

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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.