Home / 786,106.98-1,178,870.38-280,532.72

Finding the Fourth Proportional to 786,106.98, 1,178,870.38 and 280,532.72

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Solution

The fourth proportional to 786,106.98, 1,178,870.38 and 280,532.72 is: 420,695.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,106.98 : 1,178,870.38 = 280,532.72 : x
  2. Step 2: Convert to fraction form
    786,106.98/1,178,870.38 = 280,532.72/x
  3. Step 3: Cross multiply
    786,106.98x = 1,178,870.38 × 280,532.72
  4. Step 4: Simplify right side
    786,106.98x = 330,711,716,474.68
  5. Step 5: Solve for x
    x = 330,711,716,474.68/786,106.98
  6. Step 6: Final answer
    x = 420,695.56

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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.