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Finding the Fourth Proportional to 670,436.88, 925,070.56 and 376,096.40

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Solution

The fourth proportional to 670,436.88, 925,070.56 and 376,096.40 is: 518,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,436.88 : 925,070.56 = 376,096.40 : x
  2. Step 2: Convert to fraction form
    670,436.88/925,070.56 = 376,096.40/x
  3. Step 3: Cross multiply
    670,436.88x = 925,070.56 × 376,096.40
  4. Step 4: Simplify right side
    670,436.88x = 347,915,707,361.98
  5. Step 5: Solve for x
    x = 347,915,707,361.98/670,436.88
  6. Step 6: Final answer
    x = 518,938.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.