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Finding the Fourth Proportional to 797,918.16, 1,187,977.32 and 786,749.88

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Solution

The fourth proportional to 797,918.16, 1,187,977.32 and 786,749.88 is: 1,171,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    797,918.16 : 1,187,977.32 = 786,749.88 : x
  2. Step 2: Convert to fraction form
    797,918.16/1,187,977.32 = 786,749.88/x
  3. Step 3: Cross multiply
    797,918.16x = 1,187,977.32 × 786,749.88
  4. Step 4: Simplify right side
    797,918.16x = 934,641,013,952.72
  5. Step 5: Solve for x
    x = 934,641,013,952.72/797,918.16
  6. Step 6: Final answer
    x = 1,171,349.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.