Home / 690,712.34-1,036,208.66-217,287.60

Finding the Fourth Proportional to 690,712.34, 1,036,208.66 and 217,287.60

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Solution

The fourth proportional to 690,712.34, 1,036,208.66 and 217,287.60 is: 325,975.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,712.34 : 1,036,208.66 = 217,287.60 : x
  2. Step 2: Convert to fraction form
    690,712.34/1,036,208.66 = 217,287.60/x
  3. Step 3: Cross multiply
    690,712.34x = 1,036,208.66 × 217,287.60
  4. Step 4: Simplify right side
    690,712.34x = 225,155,292,830.62
  5. Step 5: Solve for x
    x = 225,155,292,830.62/690,712.34
  6. Step 6: Final answer
    x = 325,975.49

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Double scale
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1.5x scale

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.