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Finding the Fourth Proportional to 660,604.24, 911,628.84 and 358,800.40

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Solution

The fourth proportional to 660,604.24, 911,628.84 and 358,800.40 is: 495,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,604.24 : 911,628.84 = 358,800.40 : x
  2. Step 2: Convert to fraction form
    660,604.24/911,628.84 = 358,800.40/x
  3. Step 3: Cross multiply
    660,604.24x = 911,628.84 × 358,800.40
  4. Step 4: Simplify right side
    660,604.24x = 327,092,792,443.54
  5. Step 5: Solve for x
    x = 327,092,792,443.54/660,604.24
  6. Step 6: Final answer
    x = 495,141.83

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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.