Home / 1,288,591.80-1,779,146.30-805,374.16

Finding the Fourth Proportional to 1,288,591.80, 1,779,146.30 and 805,374.16

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Solution

The fourth proportional to 1,288,591.80, 1,779,146.30 and 805,374.16 is: 1,111,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,591.80 : 1,779,146.30 = 805,374.16 : x
  2. Step 2: Convert to fraction form
    1,288,591.80/1,779,146.30 = 805,374.16/x
  3. Step 3: Cross multiply
    1,288,591.80x = 1,779,146.30 × 805,374.16
  4. Step 4: Simplify right side
    1,288,591.80x = 1,432,878,456,879.61
  5. Step 5: Solve for x
    x = 1,432,878,456,879.61/1,288,591.80
  6. Step 6: Final answer
    x = 1,111,972.35

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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.