Home / 811,970.88-1,120,624.50-489,854.94

Finding the Fourth Proportional to 811,970.88, 1,120,624.50 and 489,854.94

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Solution

The fourth proportional to 811,970.88, 1,120,624.50 and 489,854.94 is: 676,062.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,970.88 : 1,120,624.50 = 489,854.94 : x
  2. Step 2: Convert to fraction form
    811,970.88/1,120,624.50 = 489,854.94/x
  3. Step 3: Cross multiply
    811,970.88x = 1,120,624.50 × 489,854.94
  4. Step 4: Simplify right side
    811,970.88x = 548,943,447,210.03
  5. Step 5: Solve for x
    x = 548,943,447,210.03/811,970.88
  6. Step 6: Final answer
    x = 676,062.97

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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.