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Finding the Fourth Proportional to 559,523.64, 771,911.44 and 389,856.16

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Solution

The fourth proportional to 559,523.64, 771,911.44 and 389,856.16 is: 537,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,523.64 : 771,911.44 = 389,856.16 : x
  2. Step 2: Convert to fraction form
    559,523.64/771,911.44 = 389,856.16/x
  3. Step 3: Cross multiply
    559,523.64x = 771,911.44 × 389,856.16
  4. Step 4: Simplify right side
    559,523.64x = 300,934,429,858.47
  5. Step 5: Solve for x
    x = 300,934,429,858.47/559,523.64
  6. Step 6: Final answer
    x = 537,840.42

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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.