Home / 1,125,919.89-1,553,880.38-642,557.79

Finding the Fourth Proportional to 1,125,919.89, 1,553,880.38 and 642,557.79

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Solution

The fourth proportional to 1,125,919.89, 1,553,880.38 and 642,557.79 is: 886,793.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,919.89 : 1,553,880.38 = 642,557.79 : x
  2. Step 2: Convert to fraction form
    1,125,919.89/1,553,880.38 = 642,557.79/x
  3. Step 3: Cross multiply
    1,125,919.89x = 1,553,880.38 × 642,557.79
  4. Step 4: Simplify right side
    1,125,919.89x = 998,457,939,684.37
  5. Step 5: Solve for x
    x = 998,457,939,684.37/1,125,919.89
  6. Step 6: Final answer
    x = 886,793.06

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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.