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Finding the Fourth Proportional to 405,261.70, 607,892.55 and 326,529.70

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Solution

The fourth proportional to 405,261.70, 607,892.55 and 326,529.70 is: 489,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,261.70 : 607,892.55 = 326,529.70 : x
  2. Step 2: Convert to fraction form
    405,261.70/607,892.55 = 326,529.70/x
  3. Step 3: Cross multiply
    405,261.70x = 607,892.55 × 326,529.70
  4. Step 4: Simplify right side
    405,261.70x = 198,494,971,983.74
  5. Step 5: Solve for x
    x = 198,494,971,983.74/405,261.70
  6. Step 6: Final answer
    x = 489,794.55

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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.