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Finding the Fourth Proportional to 628,881.80, 943,322.70 and 376,939.40

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Solution

The fourth proportional to 628,881.80, 943,322.70 and 376,939.40 is: 565,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,881.80 : 943,322.70 = 376,939.40 : x
  2. Step 2: Convert to fraction form
    628,881.80/943,322.70 = 376,939.40/x
  3. Step 3: Cross multiply
    628,881.80x = 943,322.70 × 376,939.40
  4. Step 4: Simplify right side
    628,881.80x = 355,575,492,544.38
  5. Step 5: Solve for x
    x = 355,575,492,544.38/628,881.80
  6. Step 6: Final answer
    x = 565,409.10

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Similar ratio
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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.