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Finding the Fourth Proportional to 450,990, 622,386 and 249,786

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Solution

The fourth proportional to 450,990, 622,386 and 249,786 is: 344,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,990 : 622,386 = 249,786 : x
  2. Step 2: Convert to fraction form
    450,990/622,386 = 249,786/x
  3. Step 3: Cross multiply
    450,990x = 622,386 × 249,786
  4. Step 4: Simplify right side
    450,990x = 155,463,309,396
  5. Step 5: Solve for x
    x = 155,463,309,396/450,990
  6. Step 6: Final answer
    x = 344,715.65

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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.