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Finding the Fourth Proportional to 429,494.79, 644,334.79 and 125,913.91

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Solution

The fourth proportional to 429,494.79, 644,334.79 and 125,913.91 is: 188,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,494.79 : 644,334.79 = 125,913.91 : x
  2. Step 2: Convert to fraction form
    429,494.79/644,334.79 = 125,913.91/x
  3. Step 3: Cross multiply
    429,494.79x = 644,334.79 × 125,913.91
  4. Step 4: Simplify right side
    429,494.79x = 81,130,709,221.47
  5. Step 5: Solve for x
    x = 81,130,709,221.47/429,494.79
  6. Step 6: Final answer
    x = 188,898.01

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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.