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Finding the Fourth Proportional to 1,292,827.82, 1,939,241.72 and 661,397.18

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Solution

The fourth proportional to 1,292,827.82, 1,939,241.72 and 661,397.18 is: 992,095.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,827.82 : 1,939,241.72 = 661,397.18 : x
  2. Step 2: Convert to fraction form
    1,292,827.82/1,939,241.72 = 661,397.18/x
  3. Step 3: Cross multiply
    1,292,827.82x = 1,939,241.72 × 661,397.18
  4. Step 4: Simplify right side
    1,292,827.82x = 1,282,608,996,903.63
  5. Step 5: Solve for x
    x = 1,282,608,996,903.63/1,292,827.82
  6. Step 6: Final answer
    x = 992,095.76

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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.