Home / 1,155,318.87-1,594,217.32-638,990.75

Finding the Fourth Proportional to 1,155,318.87, 1,594,217.32 and 638,990.75

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Solution

The fourth proportional to 1,155,318.87, 1,594,217.32 and 638,990.75 is: 881,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,318.87 : 1,594,217.32 = 638,990.75 : x
  2. Step 2: Convert to fraction form
    1,155,318.87/1,594,217.32 = 638,990.75/x
  3. Step 3: Cross multiply
    1,155,318.87x = 1,594,217.32 × 638,990.75
  4. Step 4: Simplify right side
    1,155,318.87x = 1,018,690,120,969.79
  5. Step 5: Solve for x
    x = 1,018,690,120,969.79/1,155,318.87
  6. Step 6: Final answer
    x = 881,739.36

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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.