Home / 385,849.80-577,790.55-307,117.80

Finding the Fourth Proportional to 385,849.80, 577,790.55 and 307,117.80

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Solution

The fourth proportional to 385,849.80, 577,790.55 and 307,117.80 is: 459,893.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,849.80 : 577,790.55 = 307,117.80 : x
  2. Step 2: Convert to fraction form
    385,849.80/577,790.55 = 307,117.80/x
  3. Step 3: Cross multiply
    385,849.80x = 577,790.55 × 307,117.80
  4. Step 4: Simplify right side
    385,849.80x = 177,449,762,576.79
  5. Step 5: Solve for x
    x = 177,449,762,576.79/385,849.80
  6. Step 6: Final answer
    x = 459,893.36

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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.