Home / 468,385.10-646,394.28-287,107.10

Finding the Fourth Proportional to 468,385.10, 646,394.28 and 287,107.10

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Solution

The fourth proportional to 468,385.10, 646,394.28 and 287,107.10 is: 396,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,385.10 : 646,394.28 = 287,107.10 : x
  2. Step 2: Convert to fraction form
    468,385.10/646,394.28 = 287,107.10/x
  3. Step 3: Cross multiply
    468,385.10x = 646,394.28 × 287,107.10
  4. Step 4: Simplify right side
    468,385.10x = 185,584,387,187.39
  5. Step 5: Solve for x
    x = 185,584,387,187.39/468,385.10
  6. Step 6: Final answer
    x = 396,221.80

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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.