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Finding the Fourth Proportional to 5,068,506.78, 7,602,785.64 and 1,281,993.30

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Solution

The fourth proportional to 5,068,506.78, 7,602,785.64 and 1,281,993.30 is: 1,922,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,068,506.78 : 7,602,785.64 = 1,281,993.30 : x
  2. Step 2: Convert to fraction form
    5,068,506.78/7,602,785.64 = 1,281,993.30/x
  3. Step 3: Cross multiply
    5,068,506.78x = 7,602,785.64 × 1,281,993.30
  4. Step 4: Simplify right side
    5,068,506.78x = 9,746,720,251,816.21
  5. Step 5: Solve for x
    x = 9,746,720,251,816.21/5,068,506.78
  6. Step 6: Final answer
    x = 1,922,996.39

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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.