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Finding the Fourth Proportional to 504,987.75, 696,897.68 and 278,647.83

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Solution

The fourth proportional to 504,987.75, 696,897.68 and 278,647.83 is: 384,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,987.75 : 696,897.68 = 278,647.83 : x
  2. Step 2: Convert to fraction form
    504,987.75/696,897.68 = 278,647.83/x
  3. Step 3: Cross multiply
    504,987.75x = 696,897.68 × 278,647.83
  4. Step 4: Simplify right side
    504,987.75x = 194,189,024,870.80
  5. Step 5: Solve for x
    x = 194,189,024,870.80/504,987.75
  6. Step 6: Final answer
    x = 384,542.05

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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.