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Finding the Fourth Proportional to 1,295,941.70, 1,942,336.56 and 916,971.62

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Solution

The fourth proportional to 1,295,941.70, 1,942,336.56 and 916,971.62 is: 1,374,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,941.70 : 1,942,336.56 = 916,971.62 : x
  2. Step 2: Convert to fraction form
    1,295,941.70/1,942,336.56 = 916,971.62/x
  3. Step 3: Cross multiply
    1,295,941.70x = 1,942,336.56 × 916,971.62
  4. Step 4: Simplify right side
    1,295,941.70x = 1,781,067,502,008.43
  5. Step 5: Solve for x
    x = 1,781,067,502,008.43/1,295,941.70
  6. Step 6: Final answer
    x = 1,374,342.30

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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.