Home / 656,968.50-906,618.69-355,164.66

Finding the Fourth Proportional to 656,968.50, 906,618.69 and 355,164.66

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Solution

The fourth proportional to 656,968.50, 906,618.69 and 355,164.66 is: 490,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,968.50 : 906,618.69 = 355,164.66 : x
  2. Step 2: Convert to fraction form
    656,968.50/906,618.69 = 355,164.66/x
  3. Step 3: Cross multiply
    656,968.50x = 906,618.69 × 355,164.66
  4. Step 4: Simplify right side
    656,968.50x = 321,998,918,783.50
  5. Step 5: Solve for x
    x = 321,998,918,783.50/656,968.50
  6. Step 6: Final answer
    x = 490,128.40

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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.