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Finding the Fourth Proportional to 612,398.79, 918,633.93 and 185,948.52

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Solution

The fourth proportional to 612,398.79, 918,633.93 and 185,948.52 is: 278,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,398.79 : 918,633.93 = 185,948.52 : x
  2. Step 2: Convert to fraction form
    612,398.79/918,633.93 = 185,948.52/x
  3. Step 3: Cross multiply
    612,398.79x = 918,633.93 × 185,948.52
  4. Step 4: Simplify right side
    612,398.79x = 170,818,618,775.54
  5. Step 5: Solve for x
    x = 170,818,618,775.54/612,398.79
  6. Step 6: Final answer
    x = 278,933.63

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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.