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Finding the Fourth Proportional to 814,840.54, 1,223,460.64 and 455,715

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Solution

The fourth proportional to 814,840.54, 1,223,460.64 and 455,715 is: 684,243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,840.54 : 1,223,460.64 = 455,715 : x
  2. Step 2: Convert to fraction form
    814,840.54/1,223,460.64 = 455,715/x
  3. Step 3: Cross multiply
    814,840.54x = 1,223,460.64 × 455,715
  4. Step 4: Simplify right side
    814,840.54x = 557,549,365,557.60
  5. Step 5: Solve for x
    x = 557,549,365,557.60/814,840.54
  6. Step 6: Final answer
    x = 684,243.53

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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.