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Finding the Fourth Proportional to 659,402.40, 989,103.60 and 612,163.20

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Solution

The fourth proportional to 659,402.40, 989,103.60 and 612,163.20 is: 918,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,402.40 : 989,103.60 = 612,163.20 : x
  2. Step 2: Convert to fraction form
    659,402.40/989,103.60 = 612,163.20/x
  3. Step 3: Cross multiply
    659,402.40x = 989,103.60 × 612,163.20
  4. Step 4: Simplify right side
    659,402.40x = 605,492,824,907.52
  5. Step 5: Solve for x
    x = 605,492,824,907.52/659,402.40
  6. Step 6: Final answer
    x = 918,244.80

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Similar ratio
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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.