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Finding the Fourth Proportional to 662,959.80, 994,785.30 and 289,020.60

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Solution

The fourth proportional to 662,959.80, 994,785.30 and 289,020.60 is: 433,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,959.80 : 994,785.30 = 289,020.60 : x
  2. Step 2: Convert to fraction form
    662,959.80/994,785.30 = 289,020.60/x
  3. Step 3: Cross multiply
    662,959.80x = 994,785.30 × 289,020.60
  4. Step 4: Simplify right side
    662,959.80x = 287,513,444,277.18
  5. Step 5: Solve for x
    x = 287,513,444,277.18/662,959.80
  6. Step 6: Final answer
    x = 433,681.57

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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.