Home / 628,783.31-947,411.54-518,924.22

Finding the Fourth Proportional to 628,783.31, 947,411.54 and 518,924.22

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Solution

The fourth proportional to 628,783.31, 947,411.54 and 518,924.22 is: 781,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,783.31 : 947,411.54 = 518,924.22 : x
  2. Step 2: Convert to fraction form
    628,783.31/947,411.54 = 518,924.22/x
  3. Step 3: Cross multiply
    628,783.31x = 947,411.54 × 518,924.22
  4. Step 4: Simplify right side
    628,783.31x = 491,634,791,818.88
  5. Step 5: Solve for x
    x = 491,634,791,818.88/628,783.31
  6. Step 6: Final answer
    x = 781,882.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.