Home / 805,498.31-1,111,557.78-442,900.59

Finding the Fourth Proportional to 805,498.31, 1,111,557.78 and 442,900.59

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Solution

The fourth proportional to 805,498.31, 1,111,557.78 and 442,900.59 is: 611,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,498.31 : 1,111,557.78 = 442,900.59 : x
  2. Step 2: Convert to fraction form
    805,498.31/1,111,557.78 = 442,900.59/x
  3. Step 3: Cross multiply
    805,498.31x = 1,111,557.78 × 442,900.59
  4. Step 4: Simplify right side
    805,498.31x = 492,309,596,581.09
  5. Step 5: Solve for x
    x = 492,309,596,581.09/805,498.31
  6. Step 6: Final answer
    x = 611,186.38

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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.