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Finding the Fourth Proportional to 415,943.40, 623,915.10 and 363,455.40

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Solution

The fourth proportional to 415,943.40, 623,915.10 and 363,455.40 is: 545,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,943.40 : 623,915.10 = 363,455.40 : x
  2. Step 2: Convert to fraction form
    415,943.40/623,915.10 = 363,455.40/x
  3. Step 3: Cross multiply
    415,943.40x = 623,915.10 × 363,455.40
  4. Step 4: Simplify right side
    415,943.40x = 226,765,312,236.54
  5. Step 5: Solve for x
    x = 226,765,312,236.54/415,943.40
  6. Step 6: Final answer
    x = 545,183.10

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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.