Home / 721,849.31-995,908.02-415,917.78

Finding the Fourth Proportional to 721,849.31, 995,908.02 and 415,917.78

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Solution

The fourth proportional to 721,849.31, 995,908.02 and 415,917.78 is: 573,825.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,849.31 : 995,908.02 = 415,917.78 : x
  2. Step 2: Convert to fraction form
    721,849.31/995,908.02 = 415,917.78/x
  3. Step 3: Cross multiply
    721,849.31x = 995,908.02 × 415,917.78
  4. Step 4: Simplify right side
    721,849.31x = 414,215,852,762.60
  5. Step 5: Solve for x
    x = 414,215,852,762.60/721,849.31
  6. Step 6: Final answer
    x = 573,825.93

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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.