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Finding the Fourth Proportional to 504,899.72, 696,727.14 and 278,549

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Solution

The fourth proportional to 504,899.72, 696,727.14 and 278,549 is: 384,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,899.72 : 696,727.14 = 278,549 : x
  2. Step 2: Convert to fraction form
    504,899.72/696,727.14 = 278,549/x
  3. Step 3: Cross multiply
    504,899.72x = 696,727.14 × 278,549
  4. Step 4: Simplify right side
    504,899.72x = 194,072,648,119.86
  5. Step 5: Solve for x
    x = 194,072,648,119.86/504,899.72
  6. Step 6: Final answer
    x = 384,378.60

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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.