Home / 787,967.70-1,181,951.55-647,999.70

Finding the Fourth Proportional to 787,967.70, 1,181,951.55 and 647,999.70

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Solution

The fourth proportional to 787,967.70, 1,181,951.55 and 647,999.70 is: 971,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,967.70 : 1,181,951.55 = 647,999.70 : x
  2. Step 2: Convert to fraction form
    787,967.70/1,181,951.55 = 647,999.70/x
  3. Step 3: Cross multiply
    787,967.70x = 1,181,951.55 × 647,999.70
  4. Step 4: Simplify right side
    787,967.70x = 765,904,249,814.54
  5. Step 5: Solve for x
    x = 765,904,249,814.54/787,967.70
  6. Step 6: Final answer
    x = 971,999.55

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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.