Home / 719,233,286.60-991,995,018.30-618,930,783.47

Finding the Fourth Proportional to 719,233,286.60, 991,995,018.30 and 618,930,783.47

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Solution

The fourth proportional to 719,233,286.60, 991,995,018.30 and 618,930,783.47 is: 853,653,835.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,233,286.60 : 991,995,018.30 = 618,930,783.47 : x
  2. Step 2: Convert to fraction form
    719,233,286.60/991,995,018.30 = 618,930,783.47/x
  3. Step 3: Cross multiply
    719,233,286.60x = 991,995,018.30 × 618,930,783.47
  4. Step 4: Simplify right side
    719,233,286.60x = 613,976,253,869,795,968
  5. Step 5: Solve for x
    x = 613,976,253,869,795,968/719,233,286.60
  6. Step 6: Final answer
    x = 853,653,835.71

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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.