Home / 513,913,720.80-709,180,504.30-290,941,654.98

Finding the Fourth Proportional to 513,913,720.80, 709,180,504.30 and 290,941,654.98

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Solution

The fourth proportional to 513,913,720.80, 709,180,504.30 and 290,941,654.98 is: 401,487,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,913,720.80 : 709,180,504.30 = 290,941,654.98 : x
  2. Step 2: Convert to fraction form
    513,913,720.80/709,180,504.30 = 290,941,654.98/x
  3. Step 3: Cross multiply
    513,913,720.80x = 709,180,504.30 × 290,941,654.98
  4. Step 4: Simplify right side
    513,913,720.80x = 206,330,149,600,592,992
  5. Step 5: Solve for x
    x = 206,330,149,600,592,992/513,913,720.80
  6. Step 6: Final answer
    x = 401,487,917.62

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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.