Home / 811,691.46-1,120,584.69-489,483.18

Finding the Fourth Proportional to 811,691.46, 1,120,584.69 and 489,483.18

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Solution

The fourth proportional to 811,691.46, 1,120,584.69 and 489,483.18 is: 675,758.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,691.46 : 1,120,584.69 = 489,483.18 : x
  2. Step 2: Convert to fraction form
    811,691.46/1,120,584.69 = 489,483.18/x
  3. Step 3: Cross multiply
    811,691.46x = 1,120,584.69 × 489,483.18
  4. Step 4: Simplify right side
    811,691.46x = 548,507,357,520.51
  5. Step 5: Solve for x
    x = 548,507,357,520.51/811,691.46
  6. Step 6: Final answer
    x = 675,758.44

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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.