Home / 666,434.31-919,305.48-408,436.23

Finding the Fourth Proportional to 666,434.31, 919,305.48 and 408,436.23

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Solution

The fourth proportional to 666,434.31, 919,305.48 and 408,436.23 is: 563,412.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,434.31 : 919,305.48 = 408,436.23 : x
  2. Step 2: Convert to fraction form
    666,434.31/919,305.48 = 408,436.23/x
  3. Step 3: Cross multiply
    666,434.31x = 919,305.48 × 408,436.23
  4. Step 4: Simplify right side
    666,434.31x = 375,477,664,469.54
  5. Step 5: Solve for x
    x = 375,477,664,469.54/666,434.31
  6. Step 6: Final answer
    x = 563,412.87

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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.