Home / 756,379.20-1,133,013.60-519,988.80

Finding the Fourth Proportional to 756,379.20, 1,133,013.60 and 519,988.80

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Solution

The fourth proportional to 756,379.20, 1,133,013.60 and 519,988.80 is: 778,914.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,379.20 : 1,133,013.60 = 519,988.80 : x
  2. Step 2: Convert to fraction form
    756,379.20/1,133,013.60 = 519,988.80/x
  3. Step 3: Cross multiply
    756,379.20x = 1,133,013.60 × 519,988.80
  4. Step 4: Simplify right side
    756,379.20x = 589,154,382,247.68
  5. Step 5: Solve for x
    x = 589,154,382,247.68/756,379.20
  6. Step 6: Final answer
    x = 778,914.05

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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.