Home / 642,463.16-886,622.22-387,764.60

Finding the Fourth Proportional to 642,463.16, 886,622.22 and 387,764.60

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Solution

The fourth proportional to 642,463.16, 886,622.22 and 387,764.60 is: 535,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,463.16 : 886,622.22 = 387,764.60 : x
  2. Step 2: Convert to fraction form
    642,463.16/886,622.22 = 387,764.60/x
  3. Step 3: Cross multiply
    642,463.16x = 886,622.22 × 387,764.60
  4. Step 4: Simplify right side
    642,463.16x = 343,800,710,489.41
  5. Step 5: Solve for x
    x = 343,800,710,489.41/642,463.16
  6. Step 6: Final answer
    x = 535,129.07

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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.