Home / 1,205,235.37-1,663,220.28-661,380.31

Finding the Fourth Proportional to 1,205,235.37, 1,663,220.28 and 661,380.31

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Solution

The fourth proportional to 1,205,235.37, 1,663,220.28 and 661,380.31 is: 912,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,235.37 : 1,663,220.28 = 661,380.31 : x
  2. Step 2: Convert to fraction form
    1,205,235.37/1,663,220.28 = 661,380.31/x
  3. Step 3: Cross multiply
    1,205,235.37x = 1,663,220.28 × 661,380.31
  4. Step 4: Simplify right side
    1,205,235.37x = 1,100,021,144,384.69
  5. Step 5: Solve for x
    x = 1,100,021,144,384.69/1,205,235.37
  6. Step 6: Final answer
    x = 912,702.34

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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.