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Finding the Fourth Proportional to 710,350.30, 980,297.86 and 388,081.27

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Solution

The fourth proportional to 710,350.30, 980,297.86 and 388,081.27 is: 535,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,350.30 : 980,297.86 = 388,081.27 : x
  2. Step 2: Convert to fraction form
    710,350.30/980,297.86 = 388,081.27/x
  3. Step 3: Cross multiply
    710,350.30x = 980,297.86 × 388,081.27
  4. Step 4: Simplify right side
    710,350.30x = 380,435,233,585.59
  5. Step 5: Solve for x
    x = 380,435,233,585.59/710,350.30
  6. Step 6: Final answer
    x = 535,560.04

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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.