Home / 678,370.20-1,016,225.01-393,462.15

Finding the Fourth Proportional to 678,370.20, 1,016,225.01 and 393,462.15

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Solution

The fourth proportional to 678,370.20, 1,016,225.01 and 393,462.15 is: 589,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,370.20 : 1,016,225.01 = 393,462.15 : x
  2. Step 2: Convert to fraction form
    678,370.20/1,016,225.01 = 393,462.15/x
  3. Step 3: Cross multiply
    678,370.20x = 1,016,225.01 × 393,462.15
  4. Step 4: Simplify right side
    678,370.20x = 399,846,077,318.37
  5. Step 5: Solve for x
    x = 399,846,077,318.37/678,370.20
  6. Step 6: Final answer
    x = 589,421.64

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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.