Home / 683,123.20-1,024,838.40-209,830.40

Finding the Fourth Proportional to 683,123.20, 1,024,838.40 and 209,830.40

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Solution

The fourth proportional to 683,123.20, 1,024,838.40 and 209,830.40 is: 314,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,123.20 : 1,024,838.40 = 209,830.40 : x
  2. Step 2: Convert to fraction form
    683,123.20/1,024,838.40 = 209,830.40/x
  3. Step 3: Cross multiply
    683,123.20x = 1,024,838.40 × 209,830.40
  4. Step 4: Simplify right side
    683,123.20x = 215,042,251,407.36
  5. Step 5: Solve for x
    x = 215,042,251,407.36/683,123.20
  6. Step 6: Final answer
    x = 314,792.78

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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.