Home / 638,913.23-881,632.17-352,433.32

Finding the Fourth Proportional to 638,913.23, 881,632.17 and 352,433.32

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Solution

The fourth proportional to 638,913.23, 881,632.17 and 352,433.32 is: 486,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,913.23 : 881,632.17 = 352,433.32 : x
  2. Step 2: Convert to fraction form
    638,913.23/881,632.17 = 352,433.32/x
  3. Step 3: Cross multiply
    638,913.23x = 881,632.17 × 352,433.32
  4. Step 4: Simplify right side
    638,913.23x = 310,716,552,691.90
  5. Step 5: Solve for x
    x = 310,716,552,691.90/638,913.23
  6. Step 6: Final answer
    x = 486,320.42

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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.