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Finding the Fourth Proportional to 615,611.35, 923,709.26 and 426,362.95

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Solution

The fourth proportional to 615,611.35, 923,709.26 and 426,362.95 is: 639,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,611.35 : 923,709.26 = 426,362.95 : x
  2. Step 2: Convert to fraction form
    615,611.35/923,709.26 = 426,362.95/x
  3. Step 3: Cross multiply
    615,611.35x = 923,709.26 × 426,362.95
  4. Step 4: Simplify right side
    615,611.35x = 393,835,405,035.92
  5. Step 5: Solve for x
    x = 393,835,405,035.92/615,611.35
  6. Step 6: Final answer
    x = 639,746.82

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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.