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Finding the Fourth Proportional to 710,259.25, 980,151.96 and 387,969.43

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Solution

The fourth proportional to 710,259.25, 980,151.96 and 387,969.43 is: 535,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,259.25 : 980,151.96 = 387,969.43 : x
  2. Step 2: Convert to fraction form
    710,259.25/980,151.96 = 387,969.43/x
  3. Step 3: Cross multiply
    710,259.25x = 980,151.96 × 387,969.43
  4. Step 4: Simplify right side
    710,259.25x = 380,268,997,234.58
  5. Step 5: Solve for x
    x = 380,268,997,234.58/710,259.25
  6. Step 6: Final answer
    x = 535,394.64

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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.