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Finding the Fourth Proportional to 530,449.05, 732,039 and 288,719.94

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Solution

The fourth proportional to 530,449.05, 732,039 and 288,719.94 is: 398,444.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,449.05 : 732,039 = 288,719.94 : x
  2. Step 2: Convert to fraction form
    530,449.05/732,039 = 288,719.94/x
  3. Step 3: Cross multiply
    530,449.05x = 732,039 × 288,719.94
  4. Step 4: Simplify right side
    530,449.05x = 211,354,256,157.66
  5. Step 5: Solve for x
    x = 211,354,256,157.66/530,449.05
  6. Step 6: Final answer
    x = 398,444.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.