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Finding the Fourth Proportional to 560,424.80, 840,637.20 and 389,182.70

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Solution

The fourth proportional to 560,424.80, 840,637.20 and 389,182.70 is: 583,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,424.80 : 840,637.20 = 389,182.70 : x
  2. Step 2: Convert to fraction form
    560,424.80/840,637.20 = 389,182.70/x
  3. Step 3: Cross multiply
    560,424.80x = 840,637.20 × 389,182.70
  4. Step 4: Simplify right side
    560,424.80x = 327,161,455,216.44
  5. Step 5: Solve for x
    x = 327,161,455,216.44/560,424.80
  6. Step 6: Final answer
    x = 583,774.05

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Similar ratio
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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.