Home / 989,165.11-1,483,719.85-315,286.81

Finding the Fourth Proportional to 989,165.11, 1,483,719.85 and 315,286.81

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Solution

The fourth proportional to 989,165.11, 1,483,719.85 and 315,286.81 is: 472,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,165.11 : 1,483,719.85 = 315,286.81 : x
  2. Step 2: Convert to fraction form
    989,165.11/1,483,719.85 = 315,286.81/x
  3. Step 3: Cross multiply
    989,165.11x = 1,483,719.85 × 315,286.81
  4. Step 4: Simplify right side
    989,165.11x = 467,797,298,440.18
  5. Step 5: Solve for x
    x = 467,797,298,440.18/989,165.11
  6. Step 6: Final answer
    x = 472,921.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.