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Finding the Fourth Proportional to 660,602.20, 911,642.98 and 374,181.56

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Solution

The fourth proportional to 660,602.20, 911,642.98 and 374,181.56 is: 516,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,602.20 : 911,642.98 = 374,181.56 : x
  2. Step 2: Convert to fraction form
    660,602.20/911,642.98 = 374,181.56/x
  3. Step 3: Cross multiply
    660,602.20x = 911,642.98 × 374,181.56
  4. Step 4: Simplify right side
    660,602.20x = 341,119,992,419.45
  5. Step 5: Solve for x
    x = 341,119,992,419.45/660,602.20
  6. Step 6: Final answer
    x = 516,377.32

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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.