Home / 820,152.05-1,230,228.08-784,722.65

Finding the Fourth Proportional to 820,152.05, 1,230,228.08 and 784,722.65

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Solution

The fourth proportional to 820,152.05, 1,230,228.08 and 784,722.65 is: 1,177,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,152.05 : 1,230,228.08 = 784,722.65 : x
  2. Step 2: Convert to fraction form
    820,152.05/1,230,228.08 = 784,722.65/x
  3. Step 3: Cross multiply
    820,152.05x = 1,230,228.08 × 784,722.65
  4. Step 4: Simplify right side
    820,152.05x = 965,387,835,118.40
  5. Step 5: Solve for x
    x = 965,387,835,118.40/820,152.05
  6. Step 6: Final answer
    x = 1,177,083.98

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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.