Home / 753,288.57-1,039,545.72-409,131.21

Finding the Fourth Proportional to 753,288.57, 1,039,545.72 and 409,131.21

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Solution

The fourth proportional to 753,288.57, 1,039,545.72 and 409,131.21 is: 564,605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,288.57 : 1,039,545.72 = 409,131.21 : x
  2. Step 2: Convert to fraction form
    753,288.57/1,039,545.72 = 409,131.21/x
  3. Step 3: Cross multiply
    753,288.57x = 1,039,545.72 × 409,131.21
  4. Step 4: Simplify right side
    753,288.57x = 425,310,598,273.92
  5. Step 5: Solve for x
    x = 425,310,598,273.92/753,288.57
  6. Step 6: Final answer
    x = 564,605.14

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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.