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Finding the Fourth Proportional to 599,296.40, 899,981.40 and 389,862.80

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Solution

The fourth proportional to 599,296.40, 899,981.40 and 389,862.80 is: 585,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,296.40 : 899,981.40 = 389,862.80 : x
  2. Step 2: Convert to fraction form
    599,296.40/899,981.40 = 389,862.80/x
  3. Step 3: Cross multiply
    599,296.40x = 899,981.40 × 389,862.80
  4. Step 4: Simplify right side
    599,296.40x = 350,869,268,551.92
  5. Step 5: Solve for x
    x = 350,869,268,551.92/599,296.40
  6. Step 6: Final answer
    x = 585,468.67

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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.