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Finding the Fourth Proportional to 559,019.72, 771,556.44 and 355,307.96

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Solution

The fourth proportional to 559,019.72, 771,556.44 and 355,307.96 is: 490,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,019.72 : 771,556.44 = 355,307.96 : x
  2. Step 2: Convert to fraction form
    559,019.72/771,556.44 = 355,307.96/x
  3. Step 3: Cross multiply
    559,019.72x = 771,556.44 × 355,307.96
  4. Step 4: Simplify right side
    559,019.72x = 274,140,144,721.26
  5. Step 5: Solve for x
    x = 274,140,144,721.26/559,019.72
  6. Step 6: Final answer
    x = 490,394.41

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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.