Home / 678,838.92-1,018,389.36-258,082.02

Finding the Fourth Proportional to 678,838.92, 1,018,389.36 and 258,082.02

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Solution

The fourth proportional to 678,838.92, 1,018,389.36 and 258,082.02 is: 387,172.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,838.92 : 1,018,389.36 = 258,082.02 : x
  2. Step 2: Convert to fraction form
    678,838.92/1,018,389.36 = 258,082.02/x
  3. Step 3: Cross multiply
    678,838.92x = 1,018,389.36 × 258,082.02
  4. Step 4: Simplify right side
    678,838.92x = 262,827,983,175.31
  5. Step 5: Solve for x
    x = 262,827,983,175.31/678,838.92
  6. Step 6: Final answer
    x = 387,172.83

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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.