Home / 706,123,208.28-974,458,951.56-388,619,998.76

Finding the Fourth Proportional to 706,123,208.28, 974,458,951.56 and 388,619,998.76

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Solution

The fourth proportional to 706,123,208.28, 974,458,951.56 and 388,619,998.76 is: 536,300,509.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,123,208.28 : 974,458,951.56 = 388,619,998.76 : x
  2. Step 2: Convert to fraction form
    706,123,208.28/974,458,951.56 = 388,619,998.76/x
  3. Step 3: Cross multiply
    706,123,208.28x = 974,458,951.56 × 388,619,998.76
  4. Step 4: Simplify right side
    706,123,208.28x = 378,694,236,546,918,080
  5. Step 5: Solve for x
    x = 378,694,236,546,918,080/706,123,208.28
  6. Step 6: Final answer
    x = 536,300,509.75

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Double scale
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1.5x scale

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.