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Finding the Fourth Proportional to 504,985.50, 696,894.57 and 278,645.58

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Solution

The fourth proportional to 504,985.50, 696,894.57 and 278,645.58 is: 384,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,985.50 : 696,894.57 = 278,645.58 : x
  2. Step 2: Convert to fraction form
    504,985.50/696,894.57 = 278,645.58/x
  3. Step 3: Cross multiply
    504,985.50x = 696,894.57 × 278,645.58
  4. Step 4: Simplify right side
    504,985.50x = 194,186,591,656.50
  5. Step 5: Solve for x
    x = 194,186,591,656.50/504,985.50
  6. Step 6: Final answer
    x = 384,538.95

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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.