Home / 860,621.43-1,187,699.57-478,640.01

Finding the Fourth Proportional to 860,621.43, 1,187,699.57 and 478,640.01

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Solution

The fourth proportional to 860,621.43, 1,187,699.57 and 478,640.01 is: 660,546.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,621.43 : 1,187,699.57 = 478,640.01 : x
  2. Step 2: Convert to fraction form
    860,621.43/1,187,699.57 = 478,640.01/x
  3. Step 3: Cross multiply
    860,621.43x = 1,187,699.57 × 478,640.01
  4. Step 4: Simplify right side
    860,621.43x = 568,480,525,730.10
  5. Step 5: Solve for x
    x = 568,480,525,730.10/860,621.43
  6. Step 6: Final answer
    x = 660,546.56

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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.