Home / 1,231,280.80-1,846,978.80-389,898.40

Finding the Fourth Proportional to 1,231,280.80, 1,846,978.80 and 389,898.40

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Solution

The fourth proportional to 1,231,280.80, 1,846,978.80 and 389,898.40 is: 584,865.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,280.80 : 1,846,978.80 = 389,898.40 : x
  2. Step 2: Convert to fraction form
    1,231,280.80/1,846,978.80 = 389,898.40/x
  3. Step 3: Cross multiply
    1,231,280.80x = 1,846,978.80 × 389,898.40
  4. Step 4: Simplify right side
    1,231,280.80x = 720,134,078,953.92
  5. Step 5: Solve for x
    x = 720,134,078,953.92/1,231,280.80
  6. Step 6: Final answer
    x = 584,865.84

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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.