Home / 679,760.84-1,019,777.38-380,666.76

Finding the Fourth Proportional to 679,760.84, 1,019,777.38 and 380,666.76

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Solution

The fourth proportional to 679,760.84, 1,019,777.38 and 380,666.76 is: 571,076.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,760.84 : 1,019,777.38 = 380,666.76 : x
  2. Step 2: Convert to fraction form
    679,760.84/1,019,777.38 = 380,666.76/x
  3. Step 3: Cross multiply
    679,760.84x = 1,019,777.38 × 380,666.76
  4. Step 4: Simplify right side
    679,760.84x = 388,195,351,165.89
  5. Step 5: Solve for x
    x = 388,195,351,165.89/679,760.84
  6. Step 6: Final answer
    x = 571,076.37

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1.5x scale

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.