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Finding the Fourth Proportional to 660,695.75, 911,846.85 and 374,225.48

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Solution

The fourth proportional to 660,695.75, 911,846.85 and 374,225.48 is: 516,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,695.75 : 911,846.85 = 374,225.48 : x
  2. Step 2: Convert to fraction form
    660,695.75/911,846.85 = 374,225.48/x
  3. Step 3: Cross multiply
    660,695.75x = 911,846.85 × 374,225.48
  4. Step 4: Simplify right side
    660,695.75x = 341,236,329,818.74
  5. Step 5: Solve for x
    x = 341,236,329,818.74/660,695.75
  6. Step 6: Final answer
    x = 516,480.28

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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.