Home / 805,920.05-1,112,146.52-438,385.61

Finding the Fourth Proportional to 805,920.05, 1,112,146.52 and 438,385.61

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Solution

The fourth proportional to 805,920.05, 1,112,146.52 and 438,385.61 is: 604,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,920.05 : 1,112,146.52 = 438,385.61 : x
  2. Step 2: Convert to fraction form
    805,920.05/1,112,146.52 = 438,385.61/x
  3. Step 3: Cross multiply
    805,920.05x = 1,112,146.52 × 438,385.61
  4. Step 4: Simplify right side
    805,920.05x = 487,549,022,826.92
  5. Step 5: Solve for x
    x = 487,549,022,826.92/805,920.05
  6. Step 6: Final answer
    x = 604,959.54

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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.