Home / 691,775.40-954,790.02-405,540.84

Finding the Fourth Proportional to 691,775.40, 954,790.02 and 405,540.84

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Solution

The fourth proportional to 691,775.40, 954,790.02 and 405,540.84 is: 559,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,775.40 : 954,790.02 = 405,540.84 : x
  2. Step 2: Convert to fraction form
    691,775.40/954,790.02 = 405,540.84/x
  3. Step 3: Cross multiply
    691,775.40x = 954,790.02 × 405,540.84
  4. Step 4: Simplify right side
    691,775.40x = 387,206,346,734.42
  5. Step 5: Solve for x
    x = 387,206,346,734.42/691,775.40
  6. Step 6: Final answer
    x = 559,728.41

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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.