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Finding the Fourth Proportional to 660,358.52, 911,309.34 and 369,991.44

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Solution

The fourth proportional to 660,358.52, 911,309.34 and 369,991.44 is: 510,596.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,358.52 : 911,309.34 = 369,991.44 : x
  2. Step 2: Convert to fraction form
    660,358.52/911,309.34 = 369,991.44/x
  3. Step 3: Cross multiply
    660,358.52x = 911,309.34 × 369,991.44
  4. Step 4: Simplify right side
    660,358.52x = 337,176,654,992.05
  5. Step 5: Solve for x
    x = 337,176,654,992.05/660,358.52
  6. Step 6: Final answer
    x = 510,596.36

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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.