Home / 578,022.80-867,034.20-438,054.80

Finding the Fourth Proportional to 578,022.80, 867,034.20 and 438,054.80

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Solution

The fourth proportional to 578,022.80, 867,034.20 and 438,054.80 is: 657,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,022.80 : 867,034.20 = 438,054.80 : x
  2. Step 2: Convert to fraction form
    578,022.80/867,034.20 = 438,054.80/x
  3. Step 3: Cross multiply
    578,022.80x = 867,034.20 × 438,054.80
  4. Step 4: Simplify right side
    578,022.80x = 379,808,493,074.16
  5. Step 5: Solve for x
    x = 379,808,493,074.16/578,022.80
  6. Step 6: Final answer
    x = 657,082.20

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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.