Home / 842,011.80-1,161,920.52-479,472.72

Finding the Fourth Proportional to 842,011.80, 1,161,920.52 and 479,472.72

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Solution

The fourth proportional to 842,011.80, 1,161,920.52 and 479,472.72 is: 661,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,011.80 : 1,161,920.52 = 479,472.72 : x
  2. Step 2: Convert to fraction form
    842,011.80/1,161,920.52 = 479,472.72/x
  3. Step 3: Cross multiply
    842,011.80x = 1,161,920.52 × 479,472.72
  4. Step 4: Simplify right side
    842,011.80x = 557,109,192,148.21
  5. Step 5: Solve for x
    x = 557,109,192,148.21/842,011.80
  6. Step 6: Final answer
    x = 661,640.60

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1.5x scale

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.