Home / 642,203.46-886,269.95-355,723.51

Finding the Fourth Proportional to 642,203.46, 886,269.95 and 355,723.51

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Solution

The fourth proportional to 642,203.46, 886,269.95 and 355,723.51 is: 490,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,203.46 : 886,269.95 = 355,723.51 : x
  2. Step 2: Convert to fraction form
    642,203.46/886,269.95 = 355,723.51/x
  3. Step 3: Cross multiply
    642,203.46x = 886,269.95 × 355,723.51
  4. Step 4: Simplify right side
    642,203.46x = 315,267,057,421.53
  5. Step 5: Solve for x
    x = 315,267,057,421.53/642,203.46
  6. Step 6: Final answer
    x = 490,914.60

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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.