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Finding the Fourth Proportional to 480,940.72, 663,710.52 and 289,966.36

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Solution

The fourth proportional to 480,940.72, 663,710.52 and 289,966.36 is: 400,161.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,940.72 : 663,710.52 = 289,966.36 : x
  2. Step 2: Convert to fraction form
    480,940.72/663,710.52 = 289,966.36/x
  3. Step 3: Cross multiply
    480,940.72x = 663,710.52 × 289,966.36
  4. Step 4: Simplify right side
    480,940.72x = 192,453,723,578.11
  5. Step 5: Solve for x
    x = 192,453,723,578.11/480,940.72
  6. Step 6: Final answer
    x = 400,161.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.