Home / 689,283.04-951,147.84-398,844.40

Finding the Fourth Proportional to 689,283.04, 951,147.84 and 398,844.40

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Solution

The fourth proportional to 689,283.04, 951,147.84 and 398,844.40 is: 550,368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,283.04 : 951,147.84 = 398,844.40 : x
  2. Step 2: Convert to fraction form
    689,283.04/951,147.84 = 398,844.40/x
  3. Step 3: Cross multiply
    689,283.04x = 951,147.84 × 398,844.40
  4. Step 4: Simplify right side
    689,283.04x = 379,359,989,556.10
  5. Step 5: Solve for x
    x = 379,359,989,556.10/689,283.04
  6. Step 6: Final answer
    x = 550,368.96

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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.