Home / 728,876.49-1,005,895.85-406,585.94

Finding the Fourth Proportional to 728,876.49, 1,005,895.85 and 406,585.94

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Solution

The fourth proportional to 728,876.49, 1,005,895.85 and 406,585.94 is: 561,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,876.49 : 1,005,895.85 = 406,585.94 : x
  2. Step 2: Convert to fraction form
    728,876.49/1,005,895.85 = 406,585.94/x
  3. Step 3: Cross multiply
    728,876.49x = 1,005,895.85 × 406,585.94
  4. Step 4: Simplify right side
    728,876.49x = 408,983,102,651.94
  5. Step 5: Solve for x
    x = 408,983,102,651.94/728,876.49
  6. Step 6: Final answer
    x = 561,114.41

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Double scale
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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.