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Finding the Fourth Proportional to 415,019.58, 623,089.07 and 265,551.63

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Solution

The fourth proportional to 415,019.58, 623,089.07 and 265,551.63 is: 398,685.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,019.58 : 623,089.07 = 265,551.63 : x
  2. Step 2: Convert to fraction form
    415,019.58/623,089.07 = 265,551.63/x
  3. Step 3: Cross multiply
    415,019.58x = 623,089.07 × 265,551.63
  4. Step 4: Simplify right side
    415,019.58x = 165,462,318,173.68
  5. Step 5: Solve for x
    x = 165,462,318,173.68/415,019.58
  6. Step 6: Final answer
    x = 398,685.57

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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.