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Finding the Fourth Proportional to 814,652.40, 1,221,978.60 and 755,603.40

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Solution

The fourth proportional to 814,652.40, 1,221,978.60 and 755,603.40 is: 1,133,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,652.40 : 1,221,978.60 = 755,603.40 : x
  2. Step 2: Convert to fraction form
    814,652.40/1,221,978.60 = 755,603.40/x
  3. Step 3: Cross multiply
    814,652.40x = 1,221,978.60 × 755,603.40
  4. Step 4: Simplify right side
    814,652.40x = 923,331,184,887.24
  5. Step 5: Solve for x
    x = 923,331,184,887.24/814,652.40
  6. Step 6: Final answer
    x = 1,133,405.10

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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.