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Finding the Fourth Proportional to 1,271,886.57, 1,754,769.02 and 788,275.26

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Solution

The fourth proportional to 1,271,886.57, 1,754,769.02 and 788,275.26 is: 1,087,550.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,886.57 : 1,754,769.02 = 788,275.26 : x
  2. Step 2: Convert to fraction form
    1,271,886.57/1,754,769.02 = 788,275.26/x
  3. Step 3: Cross multiply
    1,271,886.57x = 1,754,769.02 × 788,275.26
  4. Step 4: Simplify right side
    1,271,886.57x = 1,383,241,001,539.07
  5. Step 5: Solve for x
    x = 1,383,241,001,539.07/1,271,886.57
  6. Step 6: Final answer
    x = 1,087,550.60

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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.