Home / 860,621.18-1,187,699.22-478,639.76

Finding the Fourth Proportional to 860,621.18, 1,187,699.22 and 478,639.76

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Solution

The fourth proportional to 860,621.18, 1,187,699.22 and 478,639.76 is: 660,546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,621.18 : 1,187,699.22 = 478,639.76 : x
  2. Step 2: Convert to fraction form
    860,621.18/1,187,699.22 = 478,639.76/x
  3. Step 3: Cross multiply
    860,621.18x = 1,187,699.22 × 478,639.76
  4. Step 4: Simplify right side
    860,621.18x = 568,480,063,674.49
  5. Step 5: Solve for x
    x = 568,480,063,674.49/860,621.18
  6. Step 6: Final answer
    x = 660,546.22

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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.