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Finding the Fourth Proportional to 660,352.86, 911,290.30 and 373,928.76

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Solution

The fourth proportional to 660,352.86, 911,290.30 and 373,928.76 is: 516,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,352.86 : 911,290.30 = 373,928.76 : x
  2. Step 2: Convert to fraction form
    660,352.86/911,290.30 = 373,928.76/x
  3. Step 3: Cross multiply
    660,352.86x = 911,290.30 × 373,928.76
  4. Step 4: Simplify right side
    660,352.86x = 340,757,649,630.22
  5. Step 5: Solve for x
    x = 340,757,649,630.22/660,352.86
  6. Step 6: Final answer
    x = 516,023.59

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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.