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Finding the Fourth Proportional to 415,531.60, 623,297.40 and 344,672.80

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Solution

The fourth proportional to 415,531.60, 623,297.40 and 344,672.80 is: 517,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,531.60 : 623,297.40 = 344,672.80 : x
  2. Step 2: Convert to fraction form
    415,531.60/623,297.40 = 344,672.80/x
  3. Step 3: Cross multiply
    415,531.60x = 623,297.40 × 344,672.80
  4. Step 4: Simplify right side
    415,531.60x = 214,833,660,090.72
  5. Step 5: Solve for x
    x = 214,833,660,090.72/415,531.60
  6. Step 6: Final answer
    x = 517,009.20

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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.