Home / 860,617.80-1,187,694.64-478,636.38

Finding the Fourth Proportional to 860,617.80, 1,187,694.64 and 478,636.38

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Solution

The fourth proportional to 860,617.80, 1,187,694.64 and 478,636.38 is: 660,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,617.80 : 1,187,694.64 = 478,636.38 : x
  2. Step 2: Convert to fraction form
    860,617.80/1,187,694.64 = 478,636.38/x
  3. Step 3: Cross multiply
    860,617.80x = 1,187,694.64 × 478,636.38
  4. Step 4: Simplify right side
    860,617.80x = 568,473,863,035.00
  5. Step 5: Solve for x
    x = 568,473,863,035.00/860,617.80
  6. Step 6: Final answer
    x = 660,541.61

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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.