Home / 646,346,591.75-969,656,069.50-209,613,221.93

Finding the Fourth Proportional to 646,346,591.75, 969,656,069.50 and 209,613,221.93

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Solution

The fourth proportional to 646,346,591.75, 969,656,069.50 and 209,613,221.93 is: 314,463,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,346,591.75 : 969,656,069.50 = 209,613,221.93 : x
  2. Step 2: Convert to fraction form
    646,346,591.75/969,656,069.50 = 209,613,221.93/x
  3. Step 3: Cross multiply
    646,346,591.75x = 969,656,069.50 × 209,613,221.93
  4. Step 4: Simplify right side
    646,346,591.75x = 203,252,732,891,875,008
  5. Step 5: Solve for x
    x = 203,252,732,891,875,008/646,346,591.75
  6. Step 6: Final answer
    x = 314,463,997.31

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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.