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Finding the Fourth Proportional to 622,402.80, 933,733.80 and 355,945.20

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Solution

The fourth proportional to 622,402.80, 933,733.80 and 355,945.20 is: 533,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,402.80 : 933,733.80 = 355,945.20 : x
  2. Step 2: Convert to fraction form
    622,402.80/933,733.80 = 355,945.20/x
  3. Step 3: Cross multiply
    622,402.80x = 933,733.80 × 355,945.20
  4. Step 4: Simplify right side
    622,402.80x = 332,358,064,187.76
  5. Step 5: Solve for x
    x = 332,358,064,187.76/622,402.80
  6. Step 6: Final answer
    x = 533,991.92

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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.