Home / 430,447.41-645,080.43-272,392.92

Finding the Fourth Proportional to 430,447.41, 645,080.43 and 272,392.92

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Solution

The fourth proportional to 430,447.41, 645,080.43 and 272,392.92 is: 408,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,447.41 : 645,080.43 = 272,392.92 : x
  2. Step 2: Convert to fraction form
    430,447.41/645,080.43 = 272,392.92/x
  3. Step 3: Cross multiply
    430,447.41x = 645,080.43 × 272,392.92
  4. Step 4: Simplify right side
    430,447.41x = 175,715,341,962.56
  5. Step 5: Solve for x
    x = 175,715,341,962.56/430,447.41
  6. Step 6: Final answer
    x = 408,215.59

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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.