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Finding the Fourth Proportional to 710,202.97, 980,074.26 and 387,913.29

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Solution

The fourth proportional to 710,202.97, 980,074.26 and 387,913.29 is: 535,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,202.97 : 980,074.26 = 387,913.29 : x
  2. Step 2: Convert to fraction form
    710,202.97/980,074.26 = 387,913.29/x
  3. Step 3: Cross multiply
    710,202.97x = 980,074.26 × 387,913.29
  4. Step 4: Simplify right side
    710,202.97x = 380,183,825,740.54
  5. Step 5: Solve for x
    x = 380,183,825,740.54/710,202.97
  6. Step 6: Final answer
    x = 535,317.14

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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.