Home / 1,390,988.40-2,085,964.20-492,082.80

Finding the Fourth Proportional to 1,390,988.40, 2,085,964.20 and 492,082.80

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Solution

The fourth proportional to 1,390,988.40, 2,085,964.20 and 492,082.80 is: 737,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,988.40 : 2,085,964.20 = 492,082.80 : x
  2. Step 2: Convert to fraction form
    1,390,988.40/2,085,964.20 = 492,082.80/x
  3. Step 3: Cross multiply
    1,390,988.40x = 2,085,964.20 × 492,082.80
  4. Step 4: Simplify right side
    1,390,988.40x = 1,026,467,104,235.76
  5. Step 5: Solve for x
    x = 1,026,467,104,235.76/1,390,988.40
  6. Step 6: Final answer
    x = 737,940.81

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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.