Home / 678,754.10-1,018,352.59-323,721.98

Finding the Fourth Proportional to 678,754.10, 1,018,352.59 and 323,721.98

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Solution

The fourth proportional to 678,754.10, 1,018,352.59 and 323,721.98 is: 485,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,754.10 : 1,018,352.59 = 323,721.98 : x
  2. Step 2: Convert to fraction form
    678,754.10/1,018,352.59 = 323,721.98/x
  3. Step 3: Cross multiply
    678,754.10x = 1,018,352.59 × 323,721.98
  4. Step 4: Simplify right side
    678,754.10x = 329,663,116,772.93
  5. Step 5: Solve for x
    x = 329,663,116,772.93/678,754.10
  6. Step 6: Final answer
    x = 485,688.58

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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.