Home / 678,979.41-1,018,690.20-323,947.50

Finding the Fourth Proportional to 678,979.41, 1,018,690.20 and 323,947.50

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Solution

The fourth proportional to 678,979.41, 1,018,690.20 and 323,947.50 is: 486,026.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,979.41 : 1,018,690.20 = 323,947.50 : x
  2. Step 2: Convert to fraction form
    678,979.41/1,018,690.20 = 323,947.50/x
  3. Step 3: Cross multiply
    678,979.41x = 1,018,690.20 × 323,947.50
  4. Step 4: Simplify right side
    678,979.41x = 330,002,143,564.50
  5. Step 5: Solve for x
    x = 330,002,143,564.50/678,979.41
  6. Step 6: Final answer
    x = 486,026.73

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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.