Home / 860,621.13-1,187,699.22-478,639.71

Finding the Fourth Proportional to 860,621.13, 1,187,699.22 and 478,639.71

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Solution

The fourth proportional to 860,621.13, 1,187,699.22 and 478,639.71 is: 660,546.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,621.13 : 1,187,699.22 = 478,639.71 : x
  2. Step 2: Convert to fraction form
    860,621.13/1,187,699.22 = 478,639.71/x
  3. Step 3: Cross multiply
    860,621.13x = 1,187,699.22 × 478,639.71
  4. Step 4: Simplify right side
    860,621.13x = 568,480,010,228.03
  5. Step 5: Solve for x
    x = 568,480,010,228.03/860,621.13
  6. Step 6: Final answer
    x = 660,546.19

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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.