Home / 753,017.07-1,129,443.51-220,542.78

Finding the Fourth Proportional to 753,017.07, 1,129,443.51 and 220,542.78

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Solution

The fourth proportional to 753,017.07, 1,129,443.51 and 220,542.78 is: 330,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,017.07 : 1,129,443.51 = 220,542.78 : x
  2. Step 2: Convert to fraction form
    753,017.07/1,129,443.51 = 220,542.78/x
  3. Step 3: Cross multiply
    753,017.07x = 1,129,443.51 × 220,542.78
  4. Step 4: Simplify right side
    753,017.07x = 249,090,611,548.36
  5. Step 5: Solve for x
    x = 249,090,611,548.36/753,017.07
  6. Step 6: Final answer
    x = 330,790.13

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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.