Home / 728,695.37-1,005,601.40-406,426.34

Finding the Fourth Proportional to 728,695.37, 1,005,601.40 and 406,426.34

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Solution

The fourth proportional to 728,695.37, 1,005,601.40 and 406,426.34 is: 560,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,695.37 : 1,005,601.40 = 406,426.34 : x
  2. Step 2: Convert to fraction form
    728,695.37/1,005,601.40 = 406,426.34/x
  3. Step 3: Cross multiply
    728,695.37x = 1,005,601.40 × 406,426.34
  4. Step 4: Simplify right side
    728,695.37x = 408,702,898,506.85
  5. Step 5: Solve for x
    x = 408,702,898,506.85/728,695.37
  6. Step 6: Final answer
    x = 560,869.35

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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.