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Finding the Fourth Proportional to 452,783.40, 679,175.10 and 319,923.15

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Solution

The fourth proportional to 452,783.40, 679,175.10 and 319,923.15 is: 479,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,783.40 : 679,175.10 = 319,923.15 : x
  2. Step 2: Convert to fraction form
    452,783.40/679,175.10 = 319,923.15/x
  3. Step 3: Cross multiply
    452,783.40x = 679,175.10 × 319,923.15
  4. Step 4: Simplify right side
    452,783.40x = 217,283,837,393.57
  5. Step 5: Solve for x
    x = 217,283,837,393.57/452,783.40
  6. Step 6: Final answer
    x = 479,884.73

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Similar ratio
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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.