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Finding the Fourth Proportional to 638,570.28, 881,266.32 and 352,089.48

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Solution

The fourth proportional to 638,570.28, 881,266.32 and 352,089.48 is: 485,905.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,570.28 : 881,266.32 = 352,089.48 : x
  2. Step 2: Convert to fraction form
    638,570.28/881,266.32 = 352,089.48/x
  3. Step 3: Cross multiply
    638,570.28x = 881,266.32 × 352,089.48
  4. Step 4: Simplify right side
    638,570.28x = 310,284,600,350.31
  5. Step 5: Solve for x
    x = 310,284,600,350.31/638,570.28
  6. Step 6: Final answer
    x = 485,905.17

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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.