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Finding the Fourth Proportional to 568,881,164.79, 785,119,739.13 and 321,378,462.27

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Solution

The fourth proportional to 568,881,164.79, 785,119,739.13 and 321,378,462.27 is: 443,538,281.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,881,164.79 : 785,119,739.13 = 321,378,462.27 : x
  2. Step 2: Convert to fraction form
    568,881,164.79/785,119,739.13 = 321,378,462.27/x
  3. Step 3: Cross multiply
    568,881,164.79x = 785,119,739.13 × 321,378,462.27
  4. Step 4: Simplify right side
    568,881,164.79x = 252,320,574,459,422,944
  5. Step 5: Solve for x
    x = 252,320,574,459,422,944/568,881,164.79
  6. Step 6: Final answer
    x = 443,538,281.94

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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.