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Finding the Fourth Proportional to 501,504.12, 751,104.18 and 421,601.40

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Solution

The fourth proportional to 501,504.12, 751,104.18 and 421,601.40 is: 631,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,504.12 : 751,104.18 = 421,601.40 : x
  2. Step 2: Convert to fraction form
    501,504.12/751,104.18 = 421,601.40/x
  3. Step 3: Cross multiply
    501,504.12x = 751,104.18 × 421,601.40
  4. Step 4: Simplify right side
    501,504.12x = 316,666,573,833.85
  5. Step 5: Solve for x
    x = 316,666,573,833.85/501,504.12
  6. Step 6: Final answer
    x = 631,433.64

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1.5x scale

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.