Home / 818,972.85-1,228,634.19-286,511.25

Finding the Fourth Proportional to 818,972.85, 1,228,634.19 and 286,511.25

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Solution

The fourth proportional to 818,972.85, 1,228,634.19 and 286,511.25 is: 429,828.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,972.85 : 1,228,634.19 = 286,511.25 : x
  2. Step 2: Convert to fraction form
    818,972.85/1,228,634.19 = 286,511.25/x
  3. Step 3: Cross multiply
    818,972.85x = 1,228,634.19 × 286,511.25
  4. Step 4: Simplify right side
    818,972.85x = 352,017,517,569.64
  5. Step 5: Solve for x
    x = 352,017,517,569.64/818,972.85
  6. Step 6: Final answer
    x = 429,828.07

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1.5x scale

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.