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Finding the Fourth Proportional to 658,934.40, 988,171.20 and 343,286.40

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Solution

The fourth proportional to 658,934.40, 988,171.20 and 343,286.40 is: 514,809.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,934.40 : 988,171.20 = 343,286.40 : x
  2. Step 2: Convert to fraction form
    658,934.40/988,171.20 = 343,286.40/x
  3. Step 3: Cross multiply
    658,934.40x = 988,171.20 × 343,286.40
  4. Step 4: Simplify right side
    658,934.40x = 339,225,733,831.68
  5. Step 5: Solve for x
    x = 339,225,733,831.68/658,934.40
  6. Step 6: Final answer
    x = 514,809.57

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1.5x scale

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.