Home / 638,617.55-881,294.06-352,131.35

Finding the Fourth Proportional to 638,617.55, 881,294.06 and 352,131.35

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Solution

The fourth proportional to 638,617.55, 881,294.06 and 352,131.35 is: 485,942.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,617.55 : 881,294.06 = 352,131.35 : x
  2. Step 2: Convert to fraction form
    638,617.55/881,294.06 = 352,131.35/x
  3. Step 3: Cross multiply
    638,617.55x = 881,294.06 × 352,131.35
  4. Step 4: Simplify right side
    638,617.55x = 310,331,265,334.12
  5. Step 5: Solve for x
    x = 310,331,265,334.12/638,617.55
  6. Step 6: Final answer
    x = 485,942.28

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1.5x scale

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.