Home / 666,360.36-997,938.90-381,186.36

Finding the Fourth Proportional to 666,360.36, 997,938.90 and 381,186.36

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Solution

The fourth proportional to 666,360.36, 997,938.90 and 381,186.36 is: 570,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,360.36 : 997,938.90 = 381,186.36 : x
  2. Step 2: Convert to fraction form
    666,360.36/997,938.90 = 381,186.36/x
  3. Step 3: Cross multiply
    666,360.36x = 997,938.90 × 381,186.36
  4. Step 4: Simplify right side
    666,360.36x = 380,400,696,793.40
  5. Step 5: Solve for x
    x = 380,400,696,793.40/666,360.36
  6. Step 6: Final answer
    x = 570,863.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.