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Finding the Fourth Proportional to 599,308.40, 899,999.40 and 389,874.80

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Solution

The fourth proportional to 599,308.40, 899,999.40 and 389,874.80 is: 585,486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,308.40 : 899,999.40 = 389,874.80 : x
  2. Step 2: Convert to fraction form
    599,308.40/899,999.40 = 389,874.80/x
  3. Step 3: Cross multiply
    599,308.40x = 899,999.40 × 389,874.80
  4. Step 4: Simplify right side
    599,308.40x = 350,887,086,075.12
  5. Step 5: Solve for x
    x = 350,887,086,075.12/599,308.40
  6. Step 6: Final answer
    x = 585,486.68

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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.