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Finding the Fourth Proportional to 599,536.72, 899,041.56 and 318,987.28

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Solution

The fourth proportional to 599,536.72, 899,041.56 and 318,987.28 is: 478,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,536.72 : 899,041.56 = 318,987.28 : x
  2. Step 2: Convert to fraction form
    599,536.72/899,041.56 = 318,987.28/x
  3. Step 3: Cross multiply
    599,536.72x = 899,041.56 × 318,987.28
  4. Step 4: Simplify right side
    599,536.72x = 286,782,821,831.36
  5. Step 5: Solve for x
    x = 286,782,821,831.36/599,536.72
  6. Step 6: Final answer
    x = 478,340.71

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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.