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Finding the Fourth Proportional to 643,827.49, 966,689.24 and 360,073.98

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Solution

The fourth proportional to 643,827.49, 966,689.24 and 360,073.98 is: 540,641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,827.49 : 966,689.24 = 360,073.98 : x
  2. Step 2: Convert to fraction form
    643,827.49/966,689.24 = 360,073.98/x
  3. Step 3: Cross multiply
    643,827.49x = 966,689.24 × 360,073.98
  4. Step 4: Simplify right side
    643,827.49x = 348,079,642,069.98
  5. Step 5: Solve for x
    x = 348,079,642,069.98/643,827.49
  6. Step 6: Final answer
    x = 540,641.16

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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.