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Finding the Fourth Proportional to 893,656.80, 1,340,128.80 and 294,451.20

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Solution

The fourth proportional to 893,656.80, 1,340,128.80 and 294,451.20 is: 441,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,656.80 : 1,340,128.80 = 294,451.20 : x
  2. Step 2: Convert to fraction form
    893,656.80/1,340,128.80 = 294,451.20/x
  3. Step 3: Cross multiply
    893,656.80x = 1,340,128.80 × 294,451.20
  4. Step 4: Simplify right side
    893,656.80x = 394,602,533,314.56
  5. Step 5: Solve for x
    x = 394,602,533,314.56/893,656.80
  6. Step 6: Final answer
    x = 441,559.37

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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.