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Finding the Fourth Proportional to 643,357.95, 965,668.41 and 537,422.40

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Solution

The fourth proportional to 643,357.95, 965,668.41 and 537,422.40 is: 806,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,357.95 : 965,668.41 = 537,422.40 : x
  2. Step 2: Convert to fraction form
    643,357.95/965,668.41 = 537,422.40/x
  3. Step 3: Cross multiply
    643,357.95x = 965,668.41 × 537,422.40
  4. Step 4: Simplify right side
    643,357.95x = 518,971,834,506.38
  5. Step 5: Solve for x
    x = 518,971,834,506.38/643,357.95
  6. Step 6: Final answer
    x = 806,661.10

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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.