Home / 716,288.24-988,490.32-394,011.92

Finding the Fourth Proportional to 716,288.24, 988,490.32 and 394,011.92

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Solution

The fourth proportional to 716,288.24, 988,490.32 and 394,011.92 is: 543,743.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,288.24 : 988,490.32 = 394,011.92 : x
  2. Step 2: Convert to fraction form
    716,288.24/988,490.32 = 394,011.92/x
  3. Step 3: Cross multiply
    716,288.24x = 988,490.32 × 394,011.92
  4. Step 4: Simplify right side
    716,288.24x = 389,476,968,884.61
  5. Step 5: Solve for x
    x = 389,476,968,884.61/716,288.24
  6. Step 6: Final answer
    x = 543,743.35

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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.