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Finding the Fourth Proportional to 710,351.81, 980,286.16 and 388,067.29

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Solution

The fourth proportional to 710,351.81, 980,286.16 and 388,067.29 is: 535,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,351.81 : 980,286.16 = 388,067.29 : x
  2. Step 2: Convert to fraction form
    710,351.81/980,286.16 = 388,067.29/x
  3. Step 3: Cross multiply
    710,351.81x = 980,286.16 × 388,067.29
  4. Step 4: Simplify right side
    710,351.81x = 380,416,993,535.71
  5. Step 5: Solve for x
    x = 380,416,993,535.71/710,351.81
  6. Step 6: Final answer
    x = 535,533.22

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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.