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Finding the Fourth Proportional to 654,993.80, 903,882.18 and 368,513.20

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Solution

The fourth proportional to 654,993.80, 903,882.18 and 368,513.20 is: 508,543.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,993.80 : 903,882.18 = 368,513.20 : x
  2. Step 2: Convert to fraction form
    654,993.80/903,882.18 = 368,513.20/x
  3. Step 3: Cross multiply
    654,993.80x = 903,882.18 × 368,513.20
  4. Step 4: Simplify right side
    654,993.80x = 333,092,514,574.78
  5. Step 5: Solve for x
    x = 333,092,514,574.78/654,993.80
  6. Step 6: Final answer
    x = 508,543.00

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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.