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Finding the Fourth Proportional to 607,314.45, 910,971.68 and 489,216.45

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Solution

The fourth proportional to 607,314.45, 910,971.68 and 489,216.45 is: 733,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,314.45 : 910,971.68 = 489,216.45 : x
  2. Step 2: Convert to fraction form
    607,314.45/910,971.68 = 489,216.45/x
  3. Step 3: Cross multiply
    607,314.45x = 910,971.68 × 489,216.45
  4. Step 4: Simplify right side
    607,314.45x = 445,662,328,894.05
  5. Step 5: Solve for x
    x = 445,662,328,894.05/607,314.45
  6. Step 6: Final answer
    x = 733,824.68

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Similar ratio
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1.5x scale

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.