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Finding the Fourth Proportional to 1,296,569.15, 1,789,755.80 and 975,207.27

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Solution

The fourth proportional to 1,296,569.15, 1,789,755.80 and 975,207.27 is: 1,346,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,569.15 : 1,789,755.80 = 975,207.27 : x
  2. Step 2: Convert to fraction form
    1,296,569.15/1,789,755.80 = 975,207.27/x
  3. Step 3: Cross multiply
    1,296,569.15x = 1,789,755.80 × 975,207.27
  4. Step 4: Simplify right side
    1,296,569.15x = 1,745,382,862,808.63
  5. Step 5: Solve for x
    x = 1,745,382,862,808.63/1,296,569.15
  6. Step 6: Final answer
    x = 1,346,154.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.