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Finding the Fourth Proportional to 489,897.62, 734,892.65 and 190,401.13

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Solution

The fourth proportional to 489,897.62, 734,892.65 and 190,401.13 is: 285,619.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,897.62 : 734,892.65 = 190,401.13 : x
  2. Step 2: Convert to fraction form
    489,897.62/734,892.65 = 190,401.13/x
  3. Step 3: Cross multiply
    489,897.62x = 734,892.65 × 190,401.13
  4. Step 4: Simplify right side
    489,897.62x = 139,924,391,669.31
  5. Step 5: Solve for x
    x = 139,924,391,669.31/489,897.62
  6. Step 6: Final answer
    x = 285,619.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.