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Finding the Fourth Proportional to 421,737.20, 632,605.80 and 403,535.60

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Solution

The fourth proportional to 421,737.20, 632,605.80 and 403,535.60 is: 605,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,737.20 : 632,605.80 = 403,535.60 : x
  2. Step 2: Convert to fraction form
    421,737.20/632,605.80 = 403,535.60/x
  3. Step 3: Cross multiply
    421,737.20x = 632,605.80 × 403,535.60
  4. Step 4: Simplify right side
    421,737.20x = 255,278,961,066.48
  5. Step 5: Solve for x
    x = 255,278,961,066.48/421,737.20
  6. Step 6: Final answer
    x = 605,303.40

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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.