Home / 689,298.70-1,034,725.65-408,973.90

Finding the Fourth Proportional to 689,298.70, 1,034,725.65 and 408,973.90

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Solution

The fourth proportional to 689,298.70, 1,034,725.65 and 408,973.90 is: 613,922.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,298.70 : 1,034,725.65 = 408,973.90 : x
  2. Step 2: Convert to fraction form
    689,298.70/1,034,725.65 = 408,973.90/x
  3. Step 3: Cross multiply
    689,298.70x = 1,034,725.65 × 408,973.90
  4. Step 4: Simplify right side
    689,298.70x = 423,175,784,510.54
  5. Step 5: Solve for x
    x = 423,175,784,510.54/689,298.70
  6. Step 6: Final answer
    x = 613,922.21

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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.