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Finding the Fourth Proportional to 660,516.82, 911,517.87 and 358,710.82

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Solution

The fourth proportional to 660,516.82, 911,517.87 and 358,710.82 is: 495,023.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,516.82 : 911,517.87 = 358,710.82 : x
  2. Step 2: Convert to fraction form
    660,516.82/911,517.87 = 358,710.82/x
  3. Step 3: Cross multiply
    660,516.82x = 911,517.87 × 358,710.82
  4. Step 4: Simplify right side
    660,516.82x = 326,971,321,658.72
  5. Step 5: Solve for x
    x = 326,971,321,658.72/660,516.82
  6. Step 6: Final answer
    x = 495,023.46

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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.