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Finding the Fourth Proportional to 808,676.86, 1,115,265.08 and 647,473.10

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Solution

The fourth proportional to 808,676.86, 1,115,265.08 and 647,473.10 is: 892,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,676.86 : 1,115,265.08 = 647,473.10 : x
  2. Step 2: Convert to fraction form
    808,676.86/1,115,265.08 = 647,473.10/x
  3. Step 3: Cross multiply
    808,676.86x = 1,115,265.08 × 647,473.10
  4. Step 4: Simplify right side
    808,676.86x = 722,104,138,669.35
  5. Step 5: Solve for x
    x = 722,104,138,669.35/808,676.86
  6. Step 6: Final answer
    x = 892,945.22

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1.5x scale

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.