Home / 678,429.46-1,016,313.88-393,521.45

Finding the Fourth Proportional to 678,429.46, 1,016,313.88 and 393,521.45

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Solution

The fourth proportional to 678,429.46, 1,016,313.88 and 393,521.45 is: 589,510.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,429.46 : 1,016,313.88 = 393,521.45 : x
  2. Step 2: Convert to fraction form
    678,429.46/1,016,313.88 = 393,521.45/x
  3. Step 3: Cross multiply
    678,429.46x = 1,016,313.88 × 393,521.45
  4. Step 4: Simplify right side
    678,429.46x = 399,941,310,626.27
  5. Step 5: Solve for x
    x = 399,941,310,626.27/678,429.46
  6. Step 6: Final answer
    x = 589,510.53

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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.