Home / 457,921.72-686,710.04-191,700.64

Finding the Fourth Proportional to 457,921.72, 686,710.04 and 191,700.64

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Solution

The fourth proportional to 457,921.72, 686,710.04 and 191,700.64 is: 287,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,921.72 : 686,710.04 = 191,700.64 : x
  2. Step 2: Convert to fraction form
    457,921.72/686,710.04 = 191,700.64/x
  3. Step 3: Cross multiply
    457,921.72x = 686,710.04 × 191,700.64
  4. Step 4: Simplify right side
    457,921.72x = 131,642,751,487.15
  5. Step 5: Solve for x
    x = 131,642,751,487.15/457,921.72
  6. Step 6: Final answer
    x = 287,478.72

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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.