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Finding the Fourth Proportional to 629,729.40, 944,885.70 and 330,547.80

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Solution

The fourth proportional to 629,729.40, 944,885.70 and 330,547.80 is: 495,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,729.40 : 944,885.70 = 330,547.80 : x
  2. Step 2: Convert to fraction form
    629,729.40/944,885.70 = 330,547.80/x
  3. Step 3: Cross multiply
    629,729.40x = 944,885.70 × 330,547.80
  4. Step 4: Simplify right side
    629,729.40x = 312,329,889,386.46
  5. Step 5: Solve for x
    x = 312,329,889,386.46/629,729.40
  6. Step 6: Final answer
    x = 495,974.76

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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.