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Finding the Fourth Proportional to 660,793.30, 911,913.44 and 374,313.30

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Solution

The fourth proportional to 660,793.30, 911,913.44 and 374,313.30 is: 516,562.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,793.30 : 911,913.44 = 374,313.30 : x
  2. Step 2: Convert to fraction form
    660,793.30/911,913.44 = 374,313.30/x
  3. Step 3: Cross multiply
    660,793.30x = 911,913.44 × 374,313.30
  4. Step 4: Simplify right side
    660,793.30x = 341,341,329,040.75
  5. Step 5: Solve for x
    x = 341,341,329,040.75/660,793.30
  6. Step 6: Final answer
    x = 516,562.94

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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.