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Finding the Fourth Proportional to 660,149.39, 911,009.03 and 373,724.69

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Solution

The fourth proportional to 660,149.39, 911,009.03 and 373,724.69 is: 515,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,149.39 : 911,009.03 = 373,724.69 : x
  2. Step 2: Convert to fraction form
    660,149.39/911,009.03 = 373,724.69/x
  3. Step 3: Cross multiply
    660,149.39x = 911,009.03 × 373,724.69
  4. Step 4: Simplify right side
    660,149.39x = 340,466,560,900.28
  5. Step 5: Solve for x
    x = 340,466,560,900.28/660,149.39
  6. Step 6: Final answer
    x = 515,741.69

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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.