Home / 678,756.35-1,018,355.99-323,724.24

Finding the Fourth Proportional to 678,756.35, 1,018,355.99 and 323,724.24

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Solution

The fourth proportional to 678,756.35, 1,018,355.99 and 323,724.24 is: 485,691.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,756.35 : 1,018,355.99 = 323,724.24 : x
  2. Step 2: Convert to fraction form
    678,756.35/1,018,355.99 = 323,724.24/x
  3. Step 3: Cross multiply
    678,756.35x = 1,018,355.99 × 323,724.24
  4. Step 4: Simplify right side
    678,756.35x = 329,666,518,912.20
  5. Step 5: Solve for x
    x = 329,666,518,912.20/678,756.35
  6. Step 6: Final answer
    x = 485,691.98

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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.