Home / 556,588,014.72-768,008,140.80-318,395,327.36

Finding the Fourth Proportional to 556,588,014.72, 768,008,140.80 and 318,395,327.36

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Solution

The fourth proportional to 556,588,014.72, 768,008,140.80 and 318,395,327.36 is: 439,337,888.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,588,014.72 : 768,008,140.80 = 318,395,327.36 : x
  2. Step 2: Convert to fraction form
    556,588,014.72/768,008,140.80 = 318,395,327.36/x
  3. Step 3: Cross multiply
    556,588,014.72x = 768,008,140.80 × 318,395,327.36
  4. Step 4: Simplify right side
    556,588,014.72x = 244,530,203,405,160,960
  5. Step 5: Solve for x
    x = 244,530,203,405,160,960/556,588,014.72
  6. Step 6: Final answer
    x = 439,337,888.96

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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.