Home / 805,189.64-1,111,175.52-442,628.78

Finding the Fourth Proportional to 805,189.64, 1,111,175.52 and 442,628.78

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Solution

The fourth proportional to 805,189.64, 1,111,175.52 and 442,628.78 is: 610,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,189.64 : 1,111,175.52 = 442,628.78 : x
  2. Step 2: Convert to fraction form
    805,189.64/1,111,175.52 = 442,628.78/x
  3. Step 3: Cross multiply
    805,189.64x = 1,111,175.52 × 442,628.78
  4. Step 4: Simplify right side
    805,189.64x = 491,838,264,783.47
  5. Step 5: Solve for x
    x = 491,838,264,783.47/805,189.64
  6. Step 6: Final answer
    x = 610,835.31

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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.