Home / 429,031,876.47-643,553,793.41-122,323,989.34

Finding the Fourth Proportional to 429,031,876.47, 643,553,793.41 and 122,323,989.34

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Solution

The fourth proportional to 429,031,876.47, 643,553,793.41 and 122,323,989.34 is: 183,487,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,031,876.47 : 643,553,793.41 = 122,323,989.34 : x
  2. Step 2: Convert to fraction form
    429,031,876.47/643,553,793.41 = 122,323,989.34/x
  3. Step 3: Cross multiply
    429,031,876.47x = 643,553,793.41 × 122,323,989.34
  4. Step 4: Simplify right side
    429,031,876.47x = 78,722,067,364,801,408
  5. Step 5: Solve for x
    x = 78,722,067,364,801,408/429,031,876.47
  6. Step 6: Final answer
    x = 183,487,688.64

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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.