Home / 910,209.42-1,256,561.25-664,918.74

Finding the Fourth Proportional to 910,209.42, 1,256,561.25 and 664,918.74

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Solution

The fourth proportional to 910,209.42, 1,256,561.25 and 664,918.74 is: 917,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,209.42 : 1,256,561.25 = 664,918.74 : x
  2. Step 2: Convert to fraction form
    910,209.42/1,256,561.25 = 664,918.74/x
  3. Step 3: Cross multiply
    910,209.42x = 1,256,561.25 × 664,918.74
  4. Step 4: Simplify right side
    910,209.42x = 835,511,123,082.83
  5. Step 5: Solve for x
    x = 835,511,123,082.83/910,209.42
  6. Step 6: Final answer
    x = 917,932.85

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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.