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Finding the Fourth Proportional to 415,809.70, 623,714.55 and 296,836.90

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Solution

The fourth proportional to 415,809.70, 623,714.55 and 296,836.90 is: 445,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,809.70 : 623,714.55 = 296,836.90 : x
  2. Step 2: Convert to fraction form
    415,809.70/623,714.55 = 296,836.90/x
  3. Step 3: Cross multiply
    415,809.70x = 623,714.55 × 296,836.90
  4. Step 4: Simplify right side
    415,809.70x = 185,141,493,506.90
  5. Step 5: Solve for x
    x = 185,141,493,506.90/415,809.70
  6. Step 6: Final answer
    x = 445,255.35

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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.