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Finding the Fourth Proportional to 489,397.40, 733,512.90 and 205,087.40

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Solution

The fourth proportional to 489,397.40, 733,512.90 and 205,087.40 is: 307,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,397.40 : 733,512.90 = 205,087.40 : x
  2. Step 2: Convert to fraction form
    489,397.40/733,512.90 = 205,087.40/x
  3. Step 3: Cross multiply
    489,397.40x = 733,512.90 × 205,087.40
  4. Step 4: Simplify right side
    489,397.40x = 150,434,253,527.46
  5. Step 5: Solve for x
    x = 150,434,253,527.46/489,397.40
  6. Step 6: Final answer
    x = 307,386.70

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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.