Home / 878,461.12-1,212,267.87-491,272.25

Finding the Fourth Proportional to 878,461.12, 1,212,267.87 and 491,272.25

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Solution

The fourth proportional to 878,461.12, 1,212,267.87 and 491,272.25 is: 677,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,461.12 : 1,212,267.87 = 491,272.25 : x
  2. Step 2: Convert to fraction form
    878,461.12/1,212,267.87 = 491,272.25/x
  3. Step 3: Cross multiply
    878,461.12x = 1,212,267.87 × 491,272.25
  4. Step 4: Simplify right side
    878,461.12x = 595,553,555,579.91
  5. Step 5: Solve for x
    x = 595,553,555,579.91/878,461.12
  6. Step 6: Final answer
    x = 677,950.96

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Double scale
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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.