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Finding the Fourth Proportional to 476,960.40, 714,128.40 and 453,340.80

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Solution

The fourth proportional to 476,960.40, 714,128.40 and 453,340.80 is: 678,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,960.40 : 714,128.40 = 453,340.80 : x
  2. Step 2: Convert to fraction form
    476,960.40/714,128.40 = 453,340.80/x
  3. Step 3: Cross multiply
    476,960.40x = 714,128.40 × 453,340.80
  4. Step 4: Simplify right side
    476,960.40x = 323,743,540,158.72
  5. Step 5: Solve for x
    x = 323,743,540,158.72/476,960.40
  6. Step 6: Final answer
    x = 678,763.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.