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Finding the Fourth Proportional to 656,439.58, 906,189.29 and 384,469.93

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Solution

The fourth proportional to 656,439.58, 906,189.29 and 384,469.93 is: 530,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,439.58 : 906,189.29 = 384,469.93 : x
  2. Step 2: Convert to fraction form
    656,439.58/906,189.29 = 384,469.93/x
  3. Step 3: Cross multiply
    656,439.58x = 906,189.29 × 384,469.93
  4. Step 4: Simplify right side
    656,439.58x = 348,402,532,893.05
  5. Step 5: Solve for x
    x = 348,402,532,893.05/656,439.58
  6. Step 6: Final answer
    x = 530,745.77

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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.