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Finding the Fourth Proportional to 860,310.80, 1,292,332.44 and 828,818

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Solution

The fourth proportional to 860,310.80, 1,292,332.44 and 828,818 is: 1,245,024.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,310.80 : 1,292,332.44 = 828,818 : x
  2. Step 2: Convert to fraction form
    860,310.80/1,292,332.44 = 828,818/x
  3. Step 3: Cross multiply
    860,310.80x = 1,292,332.44 × 828,818
  4. Step 4: Simplify right side
    860,310.80x = 1,071,108,388,255.92
  5. Step 5: Solve for x
    x = 1,071,108,388,255.92/860,310.80
  6. Step 6: Final answer
    x = 1,245,024.92

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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.