Home / 782,362.80-1,172,669.40-333,007.20

Finding the Fourth Proportional to 782,362.80, 1,172,669.40 and 333,007.20

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Solution

The fourth proportional to 782,362.80, 1,172,669.40 and 333,007.20 is: 499,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,362.80 : 1,172,669.40 = 333,007.20 : x
  2. Step 2: Convert to fraction form
    782,362.80/1,172,669.40 = 333,007.20/x
  3. Step 3: Cross multiply
    782,362.80x = 1,172,669.40 × 333,007.20
  4. Step 4: Simplify right side
    782,362.80x = 390,507,353,419.68
  5. Step 5: Solve for x
    x = 390,507,353,419.68/782,362.80
  6. Step 6: Final answer
    x = 499,138.45

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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.