Home / 738,390.72-1,107,772.89-205,911.81

Finding the Fourth Proportional to 738,390.72, 1,107,772.89 and 205,911.81

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Solution

The fourth proportional to 738,390.72, 1,107,772.89 and 205,911.81 is: 308,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,390.72 : 1,107,772.89 = 205,911.81 : x
  2. Step 2: Convert to fraction form
    738,390.72/1,107,772.89 = 205,911.81/x
  3. Step 3: Cross multiply
    738,390.72x = 1,107,772.89 × 205,911.81
  4. Step 4: Simplify right side
    738,390.72x = 228,103,520,848.83
  5. Step 5: Solve for x
    x = 228,103,520,848.83/738,390.72
  6. Step 6: Final answer
    x = 308,919.81

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1.5x scale

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.