Home / 691,803.60-1,038,288.60-337,120.80

Finding the Fourth Proportional to 691,803.60, 1,038,288.60 and 337,120.80

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Solution

The fourth proportional to 691,803.60, 1,038,288.60 and 337,120.80 is: 505,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,803.60 : 1,038,288.60 = 337,120.80 : x
  2. Step 2: Convert to fraction form
    691,803.60/1,038,288.60 = 337,120.80/x
  3. Step 3: Cross multiply
    691,803.60x = 1,038,288.60 × 337,120.80
  4. Step 4: Simplify right side
    691,803.60x = 350,028,683,462.88
  5. Step 5: Solve for x
    x = 350,028,683,462.88/691,803.60
  6. Step 6: Final answer
    x = 505,965.40

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Double scale
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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.