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Finding the Fourth Proportional to 662,409.60, 992,593.80 and 493,135.80

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Solution

The fourth proportional to 662,409.60, 992,593.80 and 493,135.80 is: 738,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,409.60 : 992,593.80 = 493,135.80 : x
  2. Step 2: Convert to fraction form
    662,409.60/992,593.80 = 493,135.80/x
  3. Step 3: Cross multiply
    662,409.60x = 992,593.80 × 493,135.80
  4. Step 4: Simplify right side
    662,409.60x = 489,483,537,638.04
  5. Step 5: Solve for x
    x = 489,483,537,638.04/662,409.60
  6. Step 6: Final answer
    x = 738,943.91

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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.