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Finding the Fourth Proportional to 504,051.20, 754,910.40 and 345,420.80

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Solution

The fourth proportional to 504,051.20, 754,910.40 and 345,420.80 is: 517,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,051.20 : 754,910.40 = 345,420.80 : x
  2. Step 2: Convert to fraction form
    504,051.20/754,910.40 = 345,420.80/x
  3. Step 3: Cross multiply
    504,051.20x = 754,910.40 × 345,420.80
  4. Step 4: Simplify right side
    504,051.20x = 260,761,754,296.32
  5. Step 5: Solve for x
    x = 260,761,754,296.32/504,051.20
  6. Step 6: Final answer
    x = 517,331.88

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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.