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Finding the Fourth Proportional to 613,287.40, 919,931.10 and 609,350.80

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Solution

The fourth proportional to 613,287.40, 919,931.10 and 609,350.80 is: 914,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,287.40 : 919,931.10 = 609,350.80 : x
  2. Step 2: Convert to fraction form
    613,287.40/919,931.10 = 609,350.80/x
  3. Step 3: Cross multiply
    613,287.40x = 919,931.10 × 609,350.80
  4. Step 4: Simplify right side
    613,287.40x = 560,560,751,729.88
  5. Step 5: Solve for x
    x = 560,560,751,729.88/613,287.40
  6. Step 6: Final answer
    x = 914,026.20

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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.