Home / 740,013.47-1,021,218.59-400,481.72

Finding the Fourth Proportional to 740,013.47, 1,021,218.59 and 400,481.72

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Solution

The fourth proportional to 740,013.47, 1,021,218.59 and 400,481.72 is: 552,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,013.47 : 1,021,218.59 = 400,481.72 : x
  2. Step 2: Convert to fraction form
    740,013.47/1,021,218.59 = 400,481.72/x
  3. Step 3: Cross multiply
    740,013.47x = 1,021,218.59 × 400,481.72
  4. Step 4: Simplify right side
    740,013.47x = 408,979,374,891.15
  5. Step 5: Solve for x
    x = 408,979,374,891.15/740,013.47
  6. Step 6: Final answer
    x = 552,664.77

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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.