Home / 728,456.32-1,005,218.40-406,152.64

Finding the Fourth Proportional to 728,456.32, 1,005,218.40 and 406,152.64

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Solution

The fourth proportional to 728,456.32, 1,005,218.40 and 406,152.64 is: 560,462.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,456.32 : 1,005,218.40 = 406,152.64 : x
  2. Step 2: Convert to fraction form
    728,456.32/1,005,218.40 = 406,152.64/x
  3. Step 3: Cross multiply
    728,456.32x = 1,005,218.40 × 406,152.64
  4. Step 4: Simplify right side
    728,456.32x = 408,272,106,936.58
  5. Step 5: Solve for x
    x = 408,272,106,936.58/728,456.32
  6. Step 6: Final answer
    x = 560,462.03

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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.