Home / 666,765,781.60-1,000,186,463.76-206,769,347.68

Finding the Fourth Proportional to 666,765,781.60, 1,000,186,463.76 and 206,769,347.68

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Solution

The fourth proportional to 666,765,781.60, 1,000,186,463.76 and 206,769,347.68 is: 310,165,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,765,781.60 : 1,000,186,463.76 = 206,769,347.68 : x
  2. Step 2: Convert to fraction form
    666,765,781.60/1,000,186,463.76 = 206,769,347.68/x
  3. Step 3: Cross multiply
    666,765,781.60x = 1,000,186,463.76 × 206,769,347.68
  4. Step 4: Simplify right side
    666,765,781.60x = 206,807,902,670,021,152
  5. Step 5: Solve for x
    x = 206,807,902,670,021,152/666,765,781.60
  6. Step 6: Final answer
    x = 310,165,740.92

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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.