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Finding the Fourth Proportional to 613,056.60, 919,584.90 and 545,405.40

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Solution

The fourth proportional to 613,056.60, 919,584.90 and 545,405.40 is: 818,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,056.60 : 919,584.90 = 545,405.40 : x
  2. Step 2: Convert to fraction form
    613,056.60/919,584.90 = 545,405.40/x
  3. Step 3: Cross multiply
    613,056.60x = 919,584.90 × 545,405.40
  4. Step 4: Simplify right side
    613,056.60x = 501,546,570,218.46
  5. Step 5: Solve for x
    x = 501,546,570,218.46/613,056.60
  6. Step 6: Final answer
    x = 818,108.10

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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.