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Finding the Fourth Proportional to 716,292.84, 988,507.62 and 394,027.68

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Solution

The fourth proportional to 716,292.84, 988,507.62 and 394,027.68 is: 543,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,292.84 : 988,507.62 = 394,027.68 : x
  2. Step 2: Convert to fraction form
    716,292.84/988,507.62 = 394,027.68/x
  3. Step 3: Cross multiply
    716,292.84x = 988,507.62 × 394,027.68
  4. Step 4: Simplify right side
    716,292.84x = 389,499,364,170.92
  5. Step 5: Solve for x
    x = 389,499,364,170.92/716,292.84
  6. Step 6: Final answer
    x = 543,771.13

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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.