Home / 430,560.15-645,440.88-190,546.47

Finding the Fourth Proportional to 430,560.15, 645,440.88 and 190,546.47

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Solution

The fourth proportional to 430,560.15, 645,440.88 and 190,546.47 is: 285,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,560.15 : 645,440.88 = 190,546.47 : x
  2. Step 2: Convert to fraction form
    430,560.15/645,440.88 = 190,546.47/x
  3. Step 3: Cross multiply
    430,560.15x = 645,440.88 × 190,546.47
  4. Step 4: Simplify right side
    430,560.15x = 122,986,481,277.69
  5. Step 5: Solve for x
    x = 122,986,481,277.69/430,560.15
  6. Step 6: Final answer
    x = 285,642.97

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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.