Home / 678,829.80-1,018,465.92-323,797.68

Finding the Fourth Proportional to 678,829.80, 1,018,465.92 and 323,797.68

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Solution

The fourth proportional to 678,829.80, 1,018,465.92 and 323,797.68 is: 485,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,829.80 : 1,018,465.92 = 323,797.68 : x
  2. Step 2: Convert to fraction form
    678,829.80/1,018,465.92 = 323,797.68/x
  3. Step 3: Cross multiply
    678,829.80x = 1,018,465.92 × 323,797.68
  4. Step 4: Simplify right side
    678,829.80x = 329,776,902,055.07
  5. Step 5: Solve for x
    x = 329,776,902,055.07/678,829.80
  6. Step 6: Final answer
    x = 485,802.04

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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.