Home / 755,307.81-1,042,338.09-411,153.66

Finding the Fourth Proportional to 755,307.81, 1,042,338.09 and 411,153.66

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Solution

The fourth proportional to 755,307.81, 1,042,338.09 and 411,153.66 is: 567,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,307.81 : 1,042,338.09 = 411,153.66 : x
  2. Step 2: Convert to fraction form
    755,307.81/1,042,338.09 = 411,153.66/x
  3. Step 3: Cross multiply
    755,307.81x = 1,042,338.09 × 411,153.66
  4. Step 4: Simplify right side
    755,307.81x = 428,561,120,660.91
  5. Step 5: Solve for x
    x = 428,561,120,660.91/755,307.81
  6. Step 6: Final answer
    x = 567,399.30

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Double scale
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Similar ratio
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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.