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Finding the Fourth Proportional to 670,580.26, 925,425.08 and 384,155.71

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Solution

The fourth proportional to 670,580.26, 925,425.08 and 384,155.71 is: 530,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,580.26 : 925,425.08 = 384,155.71 : x
  2. Step 2: Convert to fraction form
    670,580.26/925,425.08 = 384,155.71/x
  3. Step 3: Cross multiply
    670,580.26x = 925,425.08 × 384,155.71
  4. Step 4: Simplify right side
    670,580.26x = 355,507,327,306.03
  5. Step 5: Solve for x
    x = 355,507,327,306.03/670,580.26
  6. Step 6: Final answer
    x = 530,148.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.