Home / 856,207.90-1,283,415.18-287,449.39

Finding the Fourth Proportional to 856,207.90, 1,283,415.18 and 287,449.39

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Solution

The fourth proportional to 856,207.90, 1,283,415.18 and 287,449.39 is: 430,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,207.90 : 1,283,415.18 = 287,449.39 : x
  2. Step 2: Convert to fraction form
    856,207.90/1,283,415.18 = 287,449.39/x
  3. Step 3: Cross multiply
    856,207.90x = 1,283,415.18 × 287,449.39
  4. Step 4: Simplify right side
    856,207.90x = 368,916,910,607.74
  5. Step 5: Solve for x
    x = 368,916,910,607.74/856,207.90
  6. Step 6: Final answer
    x = 430,873.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.