Home / 869,166.80-1,303,750.20-308,128.40

Finding the Fourth Proportional to 869,166.80, 1,303,750.20 and 308,128.40

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Solution

The fourth proportional to 869,166.80, 1,303,750.20 and 308,128.40 is: 462,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,166.80 : 1,303,750.20 = 308,128.40 : x
  2. Step 2: Convert to fraction form
    869,166.80/1,303,750.20 = 308,128.40/x
  3. Step 3: Cross multiply
    869,166.80x = 1,303,750.20 × 308,128.40
  4. Step 4: Simplify right side
    869,166.80x = 401,722,463,125.68
  5. Step 5: Solve for x
    x = 401,722,463,125.68/869,166.80
  6. Step 6: Final answer
    x = 462,192.60

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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.