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Finding the Fourth Proportional to 695,316.94, 959,458.04 and 389,350.78

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Solution

The fourth proportional to 695,316.94, 959,458.04 and 389,350.78 is: 537,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,316.94 : 959,458.04 = 389,350.78 : x
  2. Step 2: Convert to fraction form
    695,316.94/959,458.04 = 389,350.78/x
  3. Step 3: Cross multiply
    695,316.94x = 959,458.04 × 389,350.78
  4. Step 4: Simplify right side
    695,316.94x = 373,565,736,251.27
  5. Step 5: Solve for x
    x = 373,565,736,251.27/695,316.94
  6. Step 6: Final answer
    x = 537,259.65

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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.