Home / 643,864.34-965,817.07-323,841.53

Finding the Fourth Proportional to 643,864.34, 965,817.07 and 323,841.53

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Solution

The fourth proportional to 643,864.34, 965,817.07 and 323,841.53 is: 485,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,864.34 : 965,817.07 = 323,841.53 : x
  2. Step 2: Convert to fraction form
    643,864.34/965,817.07 = 323,841.53/x
  3. Step 3: Cross multiply
    643,864.34x = 965,817.07 × 323,841.53
  4. Step 4: Simplify right side
    643,864.34x = 312,771,679,253.86
  5. Step 5: Solve for x
    x = 312,771,679,253.86/643,864.34
  6. Step 6: Final answer
    x = 485,772.64

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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.