Home / 715,944.51-988,007.03-393,675.35

Finding the Fourth Proportional to 715,944.51, 988,007.03 and 393,675.35

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Solution

The fourth proportional to 715,944.51, 988,007.03 and 393,675.35 is: 543,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,944.51 : 988,007.03 = 393,675.35 : x
  2. Step 2: Convert to fraction form
    715,944.51/988,007.03 = 393,675.35/x
  3. Step 3: Cross multiply
    715,944.51x = 988,007.03 × 393,675.35
  4. Step 4: Simplify right side
    715,944.51x = 388,954,006,429.30
  5. Step 5: Solve for x
    x = 388,954,006,429.30/715,944.51
  6. Step 6: Final answer
    x = 543,273.96

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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.