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Finding the Fourth Proportional to 611,675.80, 917,513.82 and 190,987.72

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Solution

The fourth proportional to 611,675.80, 917,513.82 and 190,987.72 is: 286,481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,675.80 : 917,513.82 = 190,987.72 : x
  2. Step 2: Convert to fraction form
    611,675.80/917,513.82 = 190,987.72/x
  3. Step 3: Cross multiply
    611,675.80x = 917,513.82 × 190,987.72
  4. Step 4: Simplify right side
    611,675.80x = 175,233,872,550.29
  5. Step 5: Solve for x
    x = 175,233,872,550.29/611,675.80
  6. Step 6: Final answer
    x = 286,481.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.