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Finding the Fourth Proportional to 850,807.80, 1,276,211.70 and 535,879.80

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Solution

The fourth proportional to 850,807.80, 1,276,211.70 and 535,879.80 is: 803,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,807.80 : 1,276,211.70 = 535,879.80 : x
  2. Step 2: Convert to fraction form
    850,807.80/1,276,211.70 = 535,879.80/x
  3. Step 3: Cross multiply
    850,807.80x = 1,276,211.70 × 535,879.80
  4. Step 4: Simplify right side
    850,807.80x = 683,896,070,553.66
  5. Step 5: Solve for x
    x = 683,896,070,553.66/850,807.80
  6. Step 6: Final answer
    x = 803,819.70

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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.