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Finding the Fourth Proportional to 415,922.40, 623,883.60 and 345,938.40

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Solution

The fourth proportional to 415,922.40, 623,883.60 and 345,938.40 is: 518,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,922.40 : 623,883.60 = 345,938.40 : x
  2. Step 2: Convert to fraction form
    415,922.40/623,883.60 = 345,938.40/x
  3. Step 3: Cross multiply
    415,922.40x = 623,883.60 × 345,938.40
  4. Step 4: Simplify right side
    415,922.40x = 215,825,294,370.24
  5. Step 5: Solve for x
    x = 215,825,294,370.24/415,922.40
  6. Step 6: Final answer
    x = 518,907.60

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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.