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Finding the Fourth Proportional to 631,294.40, 946,941.60 and 395,364.80

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Solution

The fourth proportional to 631,294.40, 946,941.60 and 395,364.80 is: 593,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,294.40 : 946,941.60 = 395,364.80 : x
  2. Step 2: Convert to fraction form
    631,294.40/946,941.60 = 395,364.80/x
  3. Step 3: Cross multiply
    631,294.40x = 946,941.60 × 395,364.80
  4. Step 4: Simplify right side
    631,294.40x = 374,387,376,295.68
  5. Step 5: Solve for x
    x = 374,387,376,295.68/631,294.40
  6. Step 6: Final answer
    x = 593,047.20

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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.