Home / 1,125,771.90-1,553,574.38-666,912.57

Finding the Fourth Proportional to 1,125,771.90, 1,553,574.38 and 666,912.57

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Solution

The fourth proportional to 1,125,771.90, 1,553,574.38 and 666,912.57 is: 920,344.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,771.90 : 1,553,574.38 = 666,912.57 : x
  2. Step 2: Convert to fraction form
    1,125,771.90/1,553,574.38 = 666,912.57/x
  3. Step 3: Cross multiply
    1,125,771.90x = 1,553,574.38 × 666,912.57
  4. Step 4: Simplify right side
    1,125,771.90x = 1,036,098,279,117.39
  5. Step 5: Solve for x
    x = 1,036,098,279,117.39/1,125,771.90
  6. Step 6: Final answer
    x = 920,344.77

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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.