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Finding the Fourth Proportional to 504,608.40, 757,965.60 and 425,876.40

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Solution

The fourth proportional to 504,608.40, 757,965.60 and 425,876.40 is: 639,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,608.40 : 757,965.60 = 425,876.40 : x
  2. Step 2: Convert to fraction form
    504,608.40/757,965.60 = 425,876.40/x
  3. Step 3: Cross multiply
    504,608.40x = 757,965.60 × 425,876.40
  4. Step 4: Simplify right side
    504,608.40x = 322,799,661,051.84
  5. Step 5: Solve for x
    x = 322,799,661,051.84/504,608.40
  6. Step 6: Final answer
    x = 639,703.30

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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.