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Finding the Fourth Proportional to 415,521.10, 623,281.65 and 344,662.30

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Solution

The fourth proportional to 415,521.10, 623,281.65 and 344,662.30 is: 516,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,521.10 : 623,281.65 = 344,662.30 : x
  2. Step 2: Convert to fraction form
    415,521.10/623,281.65 = 344,662.30/x
  3. Step 3: Cross multiply
    415,521.10x = 623,281.65 × 344,662.30
  4. Step 4: Simplify right side
    415,521.10x = 214,821,687,036.80
  5. Step 5: Solve for x
    x = 214,821,687,036.80/415,521.10
  6. Step 6: Final answer
    x = 516,993.45

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Similar ratio
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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.