Home / 812,373.14-1,120,721.99-489,904.04

Finding the Fourth Proportional to 812,373.14, 1,120,721.99 and 489,904.04

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Solution

The fourth proportional to 812,373.14, 1,120,721.99 and 489,904.04 is: 675,854.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,373.14 : 1,120,721.99 = 489,904.04 : x
  2. Step 2: Convert to fraction form
    812,373.14/1,120,721.99 = 489,904.04/x
  3. Step 3: Cross multiply
    812,373.14x = 1,120,721.99 × 489,904.04
  4. Step 4: Simplify right side
    812,373.14x = 549,046,222,564.71
  5. Step 5: Solve for x
    x = 549,046,222,564.71/812,373.14
  6. Step 6: Final answer
    x = 675,854.73

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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.