Home / 412,935.76-618,985.32-279,829.48

Finding the Fourth Proportional to 412,935.76, 618,985.32 and 279,829.48

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Solution

The fourth proportional to 412,935.76, 618,985.32 and 279,829.48 is: 419,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,935.76 : 618,985.32 = 279,829.48 : x
  2. Step 2: Convert to fraction form
    412,935.76/618,985.32 = 279,829.48/x
  3. Step 3: Cross multiply
    412,935.76x = 618,985.32 × 279,829.48
  4. Step 4: Simplify right side
    412,935.76x = 173,210,340,223.23
  5. Step 5: Solve for x
    x = 173,210,340,223.23/412,935.76
  6. Step 6: Final answer
    x = 419,460.74

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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.