Home / 691,799.40-954,538.02-420,010.38

Finding the Fourth Proportional to 691,799.40, 954,538.02 and 420,010.38

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Solution

The fourth proportional to 691,799.40, 954,538.02 and 420,010.38 is: 579,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,799.40 : 954,538.02 = 420,010.38 : x
  2. Step 2: Convert to fraction form
    691,799.40/954,538.02 = 420,010.38/x
  3. Step 3: Cross multiply
    691,799.40x = 954,538.02 × 420,010.38
  4. Step 4: Simplify right side
    691,799.40x = 400,915,876,504.65
  5. Step 5: Solve for x
    x = 400,915,876,504.65/691,799.40
  6. Step 6: Final answer
    x = 579,526.20

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1.5x scale

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.