Home / 716,289.14-988,458.19-393,999.15

Finding the Fourth Proportional to 716,289.14, 988,458.19 and 393,999.15

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Solution

The fourth proportional to 716,289.14, 988,458.19 and 393,999.15 is: 543,707.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,289.14 : 988,458.19 = 393,999.15 : x
  2. Step 2: Convert to fraction form
    716,289.14/988,458.19 = 393,999.15/x
  3. Step 3: Cross multiply
    716,289.14x = 988,458.19 × 393,999.15
  4. Step 4: Simplify right side
    716,289.14x = 389,451,689,392.26
  5. Step 5: Solve for x
    x = 389,451,689,392.26/716,289.14
  6. Step 6: Final answer
    x = 543,707.37

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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.