Home / 689,348.43-951,270.21-398,913.93

Finding the Fourth Proportional to 689,348.43, 951,270.21 and 398,913.93

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Solution

The fourth proportional to 689,348.43, 951,270.21 and 398,913.93 is: 550,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,348.43 : 951,270.21 = 398,913.93 : x
  2. Step 2: Convert to fraction form
    689,348.43/951,270.21 = 398,913.93/x
  3. Step 3: Cross multiply
    689,348.43x = 951,270.21 × 398,913.93
  4. Step 4: Simplify right side
    689,348.43x = 379,474,937,963.03
  5. Step 5: Solve for x
    x = 379,474,937,963.03/689,348.43
  6. Step 6: Final answer
    x = 550,483.50

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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.