Home / 728,673.24-1,005,581.98-406,348.72

Finding the Fourth Proportional to 728,673.24, 1,005,581.98 and 406,348.72

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Solution

The fourth proportional to 728,673.24, 1,005,581.98 and 406,348.72 is: 560,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,673.24 : 1,005,581.98 = 406,348.72 : x
  2. Step 2: Convert to fraction form
    728,673.24/1,005,581.98 = 406,348.72/x
  3. Step 3: Cross multiply
    728,673.24x = 1,005,581.98 × 406,348.72
  4. Step 4: Simplify right side
    728,673.24x = 408,616,950,428.07
  5. Step 5: Solve for x
    x = 408,616,950,428.07/728,673.24
  6. Step 6: Final answer
    x = 560,768.43

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Half scale
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Double scale
Find fourth proportional to 728,674.24, 1,005,583.36 and 406,349.72
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.