Home / 654,656.18-981,985.43-205,411.55

Finding the Fourth Proportional to 654,656.18, 981,985.43 and 205,411.55

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Solution

The fourth proportional to 654,656.18, 981,985.43 and 205,411.55 is: 308,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,656.18 : 981,985.43 = 205,411.55 : x
  2. Step 2: Convert to fraction form
    654,656.18/981,985.43 = 205,411.55/x
  3. Step 3: Cross multiply
    654,656.18x = 981,985.43 × 205,411.55
  4. Step 4: Simplify right side
    654,656.18x = 201,711,143,701.88
  5. Step 5: Solve for x
    x = 201,711,143,701.88/654,656.18
  6. Step 6: Final answer
    x = 308,117.68

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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.