Home / 656,720.13-906,273.78-354,914.13

Finding the Fourth Proportional to 656,720.13, 906,273.78 and 354,914.13

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Solution

The fourth proportional to 656,720.13, 906,273.78 and 354,914.13 is: 489,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,720.13 : 906,273.78 = 354,914.13 : x
  2. Step 2: Convert to fraction form
    656,720.13/906,273.78 = 354,914.13/x
  3. Step 3: Cross multiply
    656,720.13x = 906,273.78 × 354,914.13
  4. Step 4: Simplify right side
    656,720.13x = 321,649,370,170.51
  5. Step 5: Solve for x
    x = 321,649,370,170.51/656,720.13
  6. Step 6: Final answer
    x = 489,781.50

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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.