Home / 638,990.46-881,801.91-352,522.62

Finding the Fourth Proportional to 638,990.46, 881,801.91 and 352,522.62

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Solution

The fourth proportional to 638,990.46, 881,801.91 and 352,522.62 is: 486,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,990.46 : 881,801.91 = 352,522.62 : x
  2. Step 2: Convert to fraction form
    638,990.46/881,801.91 = 352,522.62/x
  3. Step 3: Cross multiply
    638,990.46x = 881,801.91 × 352,522.62
  4. Step 4: Simplify right side
    638,990.46x = 310,855,119,634.20
  5. Step 5: Solve for x
    x = 310,855,119,634.20/638,990.46
  6. Step 6: Final answer
    x = 486,478.50

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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.