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Finding the Fourth Proportional to 660,512.88, 911,512.44 and 358,706.88

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Solution

The fourth proportional to 660,512.88, 911,512.44 and 358,706.88 is: 495,018.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,512.88 : 911,512.44 = 358,706.88 : x
  2. Step 2: Convert to fraction form
    660,512.88/911,512.44 = 358,706.88/x
  3. Step 3: Cross multiply
    660,512.88x = 911,512.44 × 358,706.88
  4. Step 4: Simplify right side
    660,512.88x = 326,965,783,433.59
  5. Step 5: Solve for x
    x = 326,965,783,433.59/660,512.88
  6. Step 6: Final answer
    x = 495,018.03

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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.