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Finding the Fourth Proportional to 610,398.99, 842,360.72 and 338,478.35

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Solution

The fourth proportional to 610,398.99, 842,360.72 and 338,478.35 is: 467,105.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,398.99 : 842,360.72 = 338,478.35 : x
  2. Step 2: Convert to fraction form
    610,398.99/842,360.72 = 338,478.35/x
  3. Step 3: Cross multiply
    610,398.99x = 842,360.72 × 338,478.35
  4. Step 4: Simplify right side
    610,398.99x = 285,120,860,706.22
  5. Step 5: Solve for x
    x = 285,120,860,706.22/610,398.99
  6. Step 6: Final answer
    x = 467,105.72

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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.