Home / 1,393,727.18-1,923,159.38-781,856.53

Finding the Fourth Proportional to 1,393,727.18, 1,923,159.38 and 781,856.53

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Solution

The fourth proportional to 1,393,727.18, 1,923,159.38 and 781,856.53 is: 1,078,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,727.18 : 1,923,159.38 = 781,856.53 : x
  2. Step 2: Convert to fraction form
    1,393,727.18/1,923,159.38 = 781,856.53/x
  3. Step 3: Cross multiply
    1,393,727.18x = 1,923,159.38 × 781,856.53
  4. Step 4: Simplify right side
    1,393,727.18x = 1,503,634,710,766.57
  5. Step 5: Solve for x
    x = 1,503,634,710,766.57/1,393,727.18
  6. Step 6: Final answer
    x = 1,078,858.72

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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.