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Finding the Fourth Proportional to 442,512.71, 663,266.73 and 389,101.31

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Solution

The fourth proportional to 442,512.71, 663,266.73 and 389,101.31 is: 583,210.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,512.71 : 663,266.73 = 389,101.31 : x
  2. Step 2: Convert to fraction form
    442,512.71/663,266.73 = 389,101.31/x
  3. Step 3: Cross multiply
    442,512.71x = 663,266.73 × 389,101.31
  4. Step 4: Simplify right side
    442,512.71x = 258,077,950,206.08
  5. Step 5: Solve for x
    x = 258,077,950,206.08/442,512.71
  6. Step 6: Final answer
    x = 583,210.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.