Home / 673,838.28-929,787.15-398,157.80

Finding the Fourth Proportional to 673,838.28, 929,787.15 and 398,157.80

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Solution

The fourth proportional to 673,838.28, 929,787.15 and 398,157.80 is: 549,392.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,838.28 : 929,787.15 = 398,157.80 : x
  2. Step 2: Convert to fraction form
    673,838.28/929,787.15 = 398,157.80/x
  3. Step 3: Cross multiply
    673,838.28x = 929,787.15 × 398,157.80
  4. Step 4: Simplify right side
    673,838.28x = 370,202,006,112.27
  5. Step 5: Solve for x
    x = 370,202,006,112.27/673,838.28
  6. Step 6: Final answer
    x = 549,392.96

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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.