Home / 780,321.57-1,170,482.34-219,356.07

Finding the Fourth Proportional to 780,321.57, 1,170,482.34 and 219,356.07

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Solution

The fourth proportional to 780,321.57, 1,170,482.34 and 219,356.07 is: 329,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,321.57 : 1,170,482.34 = 219,356.07 : x
  2. Step 2: Convert to fraction form
    780,321.57/1,170,482.34 = 219,356.07/x
  3. Step 3: Cross multiply
    780,321.57x = 1,170,482.34 × 219,356.07
  4. Step 4: Simplify right side
    780,321.57x = 256,752,406,106.80
  5. Step 5: Solve for x
    x = 256,752,406,106.80/780,321.57
  6. Step 6: Final answer
    x = 329,034.10

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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.