Home / 645,171.20-965,913.60-571,443.20

Finding the Fourth Proportional to 645,171.20, 965,913.60 and 571,443.20

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Solution

The fourth proportional to 645,171.20, 965,913.60 and 571,443.20 is: 855,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,171.20 : 965,913.60 = 571,443.20 : x
  2. Step 2: Convert to fraction form
    645,171.20/965,913.60 = 571,443.20/x
  3. Step 3: Cross multiply
    645,171.20x = 965,913.60 × 571,443.20
  4. Step 4: Simplify right side
    645,171.20x = 551,964,758,507.52
  5. Step 5: Solve for x
    x = 551,964,758,507.52/645,171.20
  6. Step 6: Final answer
    x = 855,532.23

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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.