Home / 728,629.48-1,005,506.70-406,339.92

Finding the Fourth Proportional to 728,629.48, 1,005,506.70 and 406,339.92

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Solution

The fourth proportional to 728,629.48, 1,005,506.70 and 406,339.92 is: 560,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,629.48 : 1,005,506.70 = 406,339.92 : x
  2. Step 2: Convert to fraction form
    728,629.48/1,005,506.70 = 406,339.92/x
  3. Step 3: Cross multiply
    728,629.48x = 1,005,506.70 × 406,339.92
  4. Step 4: Simplify right side
    728,629.48x = 408,577,512,037.46
  5. Step 5: Solve for x
    x = 408,577,512,037.46/728,629.48
  6. Step 6: Final answer
    x = 560,747.98

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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.