Home / 1,207,207.50-1,665,945.87-663,378.36

Finding the Fourth Proportional to 1,207,207.50, 1,665,945.87 and 663,378.36

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Solution

The fourth proportional to 1,207,207.50, 1,665,945.87 and 663,378.36 is: 915,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,207.50 : 1,665,945.87 = 663,378.36 : x
  2. Step 2: Convert to fraction form
    1,207,207.50/1,665,945.87 = 663,378.36/x
  3. Step 3: Cross multiply
    1,207,207.50x = 1,665,945.87 × 663,378.36
  4. Step 4: Simplify right side
    1,207,207.50x = 1,105,152,439,089.37
  5. Step 5: Solve for x
    x = 1,105,152,439,089.37/1,207,207.50
  6. Step 6: Final answer
    x = 915,461.87

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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.