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Finding the Fourth Proportional to 457,368.67, 685,923.36 and 288,636.22

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Solution

The fourth proportional to 457,368.67, 685,923.36 and 288,636.22 is: 432,872.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,368.67 : 685,923.36 = 288,636.22 : x
  2. Step 2: Convert to fraction form
    457,368.67/685,923.36 = 288,636.22/x
  3. Step 3: Cross multiply
    457,368.67x = 685,923.36 × 288,636.22
  4. Step 4: Simplify right side
    457,368.67x = 197,982,325,840.10
  5. Step 5: Solve for x
    x = 197,982,325,840.10/457,368.67
  6. Step 6: Final answer
    x = 432,872.51

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1.5x scale

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.