Home / 1,078,943.12-1,618,681.05-320,781.30

Finding the Fourth Proportional to 1,078,943.12, 1,618,681.05 and 320,781.30

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Solution

The fourth proportional to 1,078,943.12, 1,618,681.05 and 320,781.30 is: 481,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,943.12 : 1,618,681.05 = 320,781.30 : x
  2. Step 2: Convert to fraction form
    1,078,943.12/1,618,681.05 = 320,781.30/x
  3. Step 3: Cross multiply
    1,078,943.12x = 1,618,681.05 × 320,781.30
  4. Step 4: Simplify right side
    1,078,943.12x = 519,242,613,616.40
  5. Step 5: Solve for x
    x = 519,242,613,616.40/1,078,943.12
  6. Step 6: Final answer
    x = 481,251.15

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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.