Home / 716,236.86-988,407.38-393,971.48

Finding the Fourth Proportional to 716,236.86, 988,407.38 and 393,971.48

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Solution

The fourth proportional to 716,236.86, 988,407.38 and 393,971.48 is: 543,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,236.86 : 988,407.38 = 393,971.48 : x
  2. Step 2: Convert to fraction form
    716,236.86/988,407.38 = 393,971.48/x
  3. Step 3: Cross multiply
    716,236.86x = 988,407.38 × 393,971.48
  4. Step 4: Simplify right side
    716,236.86x = 389,404,311,429.63
  5. Step 5: Solve for x
    x = 389,404,311,429.63/716,236.86
  6. Step 6: Final answer
    x = 543,680.92

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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.