Home / 869,010.80-1,303,516.20-307,972.40

Finding the Fourth Proportional to 869,010.80, 1,303,516.20 and 307,972.40

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Solution

The fourth proportional to 869,010.80, 1,303,516.20 and 307,972.40 is: 461,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,010.80 : 1,303,516.20 = 307,972.40 : x
  2. Step 2: Convert to fraction form
    869,010.80/1,303,516.20 = 307,972.40/x
  3. Step 3: Cross multiply
    869,010.80x = 1,303,516.20 × 307,972.40
  4. Step 4: Simplify right side
    869,010.80x = 401,447,012,552.88
  5. Step 5: Solve for x
    x = 401,447,012,552.88/869,010.80
  6. Step 6: Final answer
    x = 461,958.60

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Double scale
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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.