Home / 740,251.40-1,021,545.78-400,719.56

Finding the Fourth Proportional to 740,251.40, 1,021,545.78 and 400,719.56

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Solution

The fourth proportional to 740,251.40, 1,021,545.78 and 400,719.56 is: 552,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,251.40 : 1,021,545.78 = 400,719.56 : x
  2. Step 2: Convert to fraction form
    740,251.40/1,021,545.78 = 400,719.56/x
  3. Step 3: Cross multiply
    740,251.40x = 1,021,545.78 × 400,719.56
  4. Step 4: Simplify right side
    740,251.40x = 409,353,375,481.46
  5. Step 5: Solve for x
    x = 409,353,375,481.46/740,251.40
  6. Step 6: Final answer
    x = 552,992.37

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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.