Home / 678,368.46-1,016,222.27-393,460.28

Finding the Fourth Proportional to 678,368.46, 1,016,222.27 and 393,460.28

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Solution

The fourth proportional to 678,368.46, 1,016,222.27 and 393,460.28 is: 589,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,368.46 : 1,016,222.27 = 393,460.28 : x
  2. Step 2: Convert to fraction form
    678,368.46/1,016,222.27 = 393,460.28/x
  3. Step 3: Cross multiply
    678,368.46x = 1,016,222.27 × 393,460.28
  4. Step 4: Simplify right side
    678,368.46x = 399,843,091,848.02
  5. Step 5: Solve for x
    x = 399,843,091,848.02/678,368.46
  6. Step 6: Final answer
    x = 589,418.75

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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.