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Finding the Fourth Proportional to 716,296.40, 988,468.19 and 394,006.42

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Solution

The fourth proportional to 716,296.40, 988,468.19 and 394,006.42 is: 543,717.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,296.40 : 988,468.19 = 394,006.42 : x
  2. Step 2: Convert to fraction form
    716,296.40/988,468.19 = 394,006.42/x
  3. Step 3: Cross multiply
    716,296.40x = 988,468.19 × 394,006.42
  4. Step 4: Simplify right side
    716,296.40x = 389,462,807,883.44
  5. Step 5: Solve for x
    x = 389,462,807,883.44/716,296.40
  6. Step 6: Final answer
    x = 543,717.39

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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.