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Finding the Fourth Proportional to 660,549.57, 911,553.27 and 358,743.57

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Solution

The fourth proportional to 660,549.57, 911,553.27 and 358,743.57 is: 495,063.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,549.57 : 911,553.27 = 358,743.57 : x
  2. Step 2: Convert to fraction form
    660,549.57/911,553.27 = 358,743.57/x
  3. Step 3: Cross multiply
    660,549.57x = 911,553.27 × 358,743.57
  4. Step 4: Simplify right side
    660,549.57x = 327,013,874,324.97
  5. Step 5: Solve for x
    x = 327,013,874,324.97/660,549.57
  6. Step 6: Final answer
    x = 495,063.34

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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.