Home / 855,291.20-1,283,221.80-286,728.50

Finding the Fourth Proportional to 855,291.20, 1,283,221.80 and 286,728.50

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Solution

The fourth proportional to 855,291.20, 1,283,221.80 and 286,728.50 is: 430,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,291.20 : 1,283,221.80 = 286,728.50 : x
  2. Step 2: Convert to fraction form
    855,291.20/1,283,221.80 = 286,728.50/x
  3. Step 3: Cross multiply
    855,291.20x = 1,283,221.80 × 286,728.50
  4. Step 4: Simplify right side
    855,291.20x = 367,936,261,881.30
  5. Step 5: Solve for x
    x = 367,936,261,881.30/855,291.20
  6. Step 6: Final answer
    x = 430,188.29

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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.