Home / 678,786.20-1,018,179.30-537,781.40

Finding the Fourth Proportional to 678,786.20, 1,018,179.30 and 537,781.40

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Solution

The fourth proportional to 678,786.20, 1,018,179.30 and 537,781.40 is: 806,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,786.20 : 1,018,179.30 = 537,781.40 : x
  2. Step 2: Convert to fraction form
    678,786.20/1,018,179.30 = 537,781.40/x
  3. Step 3: Cross multiply
    678,786.20x = 1,018,179.30 × 537,781.40
  4. Step 4: Simplify right side
    678,786.20x = 547,557,889,405.02
  5. Step 5: Solve for x
    x = 547,557,889,405.02/678,786.20
  6. Step 6: Final answer
    x = 806,672.10

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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.