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Finding the Fourth Proportional to 660,575.88, 911,599.38 and 358,769.88

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Solution

The fourth proportional to 660,575.88, 911,599.38 and 358,769.88 is: 495,104.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,575.88 : 911,599.38 = 358,769.88 : x
  2. Step 2: Convert to fraction form
    660,575.88/911,599.38 = 358,769.88/x
  3. Step 3: Cross multiply
    660,575.88x = 911,599.38 × 358,769.88
  4. Step 4: Simplify right side
    660,575.88x = 327,054,400,170.67
  5. Step 5: Solve for x
    x = 327,054,400,170.67/660,575.88
  6. Step 6: Final answer
    x = 495,104.97

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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.