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Finding the Fourth Proportional to 504,955, 696,837.90 and 278,600.50

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Solution

The fourth proportional to 504,955, 696,837.90 and 278,600.50 is: 384,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,955 : 696,837.90 = 278,600.50 : x
  2. Step 2: Convert to fraction form
    504,955/696,837.90 = 278,600.50/x
  3. Step 3: Cross multiply
    504,955x = 696,837.90 × 278,600.50
  4. Step 4: Simplify right side
    504,955x = 194,139,387,358.95
  5. Step 5: Solve for x
    x = 194,139,387,358.95/504,955
  6. Step 6: Final answer
    x = 384,468.69

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1.5x scale

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.