Home / 678,022.14-1,015,774.80-485,499.18

Finding the Fourth Proportional to 678,022.14, 1,015,774.80 and 485,499.18

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Solution

The fourth proportional to 678,022.14, 1,015,774.80 and 485,499.18 is: 727,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,022.14 : 1,015,774.80 = 485,499.18 : x
  2. Step 2: Convert to fraction form
    678,022.14/1,015,774.80 = 485,499.18/x
  3. Step 3: Cross multiply
    678,022.14x = 1,015,774.80 × 485,499.18
  4. Step 4: Simplify right side
    678,022.14x = 493,157,832,464.66
  5. Step 5: Solve for x
    x = 493,157,832,464.66/678,022.14
  6. Step 6: Final answer
    x = 727,347.68

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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.