Home / 790,970.57-1,091,533.92-428,386.11

Finding the Fourth Proportional to 790,970.57, 1,091,533.92 and 428,386.11

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Solution

The fourth proportional to 790,970.57, 1,091,533.92 and 428,386.11 is: 591,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,970.57 : 1,091,533.92 = 428,386.11 : x
  2. Step 2: Convert to fraction form
    790,970.57/1,091,533.92 = 428,386.11/x
  3. Step 3: Cross multiply
    790,970.57x = 1,091,533.92 × 428,386.11
  4. Step 4: Simplify right side
    790,970.57x = 467,597,969,921.85
  5. Step 5: Solve for x
    x = 467,597,969,921.85/790,970.57
  6. Step 6: Final answer
    x = 591,169.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.