Home / 687,777.30-949,192.70-381,913.20

Finding the Fourth Proportional to 687,777.30, 949,192.70 and 381,913.20

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Solution

The fourth proportional to 687,777.30, 949,192.70 and 381,913.20 is: 527,073.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,777.30 : 949,192.70 = 381,913.20 : x
  2. Step 2: Convert to fraction form
    687,777.30/949,192.70 = 381,913.20/x
  3. Step 3: Cross multiply
    687,777.30x = 949,192.70 × 381,913.20
  4. Step 4: Simplify right side
    687,777.30x = 362,509,219,564.07
  5. Step 5: Solve for x
    x = 362,509,219,564.07/687,777.30
  6. Step 6: Final answer
    x = 527,073.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.