Home / 649,928.45-896,599.03-420,559.87

Finding the Fourth Proportional to 649,928.45, 896,599.03 and 420,559.87

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Solution

The fourth proportional to 649,928.45, 896,599.03 and 420,559.87 is: 580,177.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,928.45 : 896,599.03 = 420,559.87 : x
  2. Step 2: Convert to fraction form
    649,928.45/896,599.03 = 420,559.87/x
  3. Step 3: Cross multiply
    649,928.45x = 896,599.03 × 420,559.87
  4. Step 4: Simplify right side
    649,928.45x = 377,073,564,913.13
  5. Step 5: Solve for x
    x = 377,073,564,913.13/649,928.45
  6. Step 6: Final answer
    x = 580,177.04

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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.