Home / 806,540.80-1,209,811.20-526,374.40

Finding the Fourth Proportional to 806,540.80, 1,209,811.20 and 526,374.40

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Solution

The fourth proportional to 806,540.80, 1,209,811.20 and 526,374.40 is: 789,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,540.80 : 1,209,811.20 = 526,374.40 : x
  2. Step 2: Convert to fraction form
    806,540.80/1,209,811.20 = 526,374.40/x
  3. Step 3: Cross multiply
    806,540.80x = 1,209,811.20 × 526,374.40
  4. Step 4: Simplify right side
    806,540.80x = 636,813,644,513.28
  5. Step 5: Solve for x
    x = 636,813,644,513.28/806,540.80
  6. Step 6: Final answer
    x = 789,561.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.