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Finding the Fourth Proportional to 721,055.87, 994,756.42 and 415,059.03

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Solution

The fourth proportional to 721,055.87, 994,756.42 and 415,059.03 is: 572,608.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,055.87 : 994,756.42 = 415,059.03 : x
  2. Step 2: Convert to fraction form
    721,055.87/994,756.42 = 415,059.03/x
  3. Step 3: Cross multiply
    721,055.87x = 994,756.42 × 415,059.03
  4. Step 4: Simplify right side
    721,055.87x = 412,882,633,733.83
  5. Step 5: Solve for x
    x = 412,882,633,733.83/721,055.87
  6. Step 6: Final answer
    x = 572,608.38

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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.