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Finding the Fourth Proportional to 508,977.80, 763,778.70 and 209,601.80

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Solution

The fourth proportional to 508,977.80, 763,778.70 and 209,601.80 is: 314,531.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,977.80 : 763,778.70 = 209,601.80 : x
  2. Step 2: Convert to fraction form
    508,977.80/763,778.70 = 209,601.80/x
  3. Step 3: Cross multiply
    508,977.80x = 763,778.70 × 209,601.80
  4. Step 4: Simplify right side
    508,977.80x = 160,089,390,321.66
  5. Step 5: Solve for x
    x = 160,089,390,321.66/508,977.80
  6. Step 6: Final answer
    x = 314,531.18

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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.