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Finding the Fourth Proportional to 624,013.20, 936,019.80 and 308,518.80

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Solution

The fourth proportional to 624,013.20, 936,019.80 and 308,518.80 is: 462,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,013.20 : 936,019.80 = 308,518.80 : x
  2. Step 2: Convert to fraction form
    624,013.20/936,019.80 = 308,518.80/x
  3. Step 3: Cross multiply
    624,013.20x = 936,019.80 × 308,518.80
  4. Step 4: Simplify right side
    624,013.20x = 288,779,705,472.24
  5. Step 5: Solve for x
    x = 288,779,705,472.24/624,013.20
  6. Step 6: Final answer
    x = 462,778.20

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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.