Home / 1,306,480.86-1,959,720.54-407,999.58

Finding the Fourth Proportional to 1,306,480.86, 1,959,720.54 and 407,999.58

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Solution

The fourth proportional to 1,306,480.86, 1,959,720.54 and 407,999.58 is: 611,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,480.86 : 1,959,720.54 = 407,999.58 : x
  2. Step 2: Convert to fraction form
    1,306,480.86/1,959,720.54 = 407,999.58/x
  3. Step 3: Cross multiply
    1,306,480.86x = 1,959,720.54 × 407,999.58
  4. Step 4: Simplify right side
    1,306,480.86x = 799,565,157,237.37
  5. Step 5: Solve for x
    x = 799,565,157,237.37/1,306,480.86
  6. Step 6: Final answer
    x = 611,999.14

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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.