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Finding the Fourth Proportional to 450,489, 621,694.26 and 249,285

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Solution

The fourth proportional to 450,489, 621,694.26 and 249,285 is: 344,024.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,489 : 621,694.26 = 249,285 : x
  2. Step 2: Convert to fraction form
    450,489/621,694.26 = 249,285/x
  3. Step 3: Cross multiply
    450,489x = 621,694.26 × 249,285
  4. Step 4: Simplify right side
    450,489x = 154,979,053,604.10
  5. Step 5: Solve for x
    x = 154,979,053,604.10/450,489
  6. Step 6: Final answer
    x = 344,024.06

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1.5x scale

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.