Home / 638,487.90-881,165.79-352,035.18

Finding the Fourth Proportional to 638,487.90, 881,165.79 and 352,035.18

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Solution

The fourth proportional to 638,487.90, 881,165.79 and 352,035.18 is: 485,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,487.90 : 881,165.79 = 352,035.18 : x
  2. Step 2: Convert to fraction form
    638,487.90/881,165.79 = 352,035.18/x
  3. Step 3: Cross multiply
    638,487.90x = 881,165.79 × 352,035.18
  4. Step 4: Simplify right side
    638,487.90x = 310,201,357,492.49
  5. Step 5: Solve for x
    x = 310,201,357,492.49/638,487.90
  6. Step 6: Final answer
    x = 485,837.49

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Double scale
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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.