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Finding the Fourth Proportional to 454,407.55, 683,087.55 and 389,453.65

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Solution

The fourth proportional to 454,407.55, 683,087.55 and 389,453.65 is: 585,445.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,407.55 : 683,087.55 = 389,453.65 : x
  2. Step 2: Convert to fraction form
    454,407.55/683,087.55 = 389,453.65/x
  3. Step 3: Cross multiply
    454,407.55x = 683,087.55 × 389,453.65
  4. Step 4: Simplify right side
    454,407.55x = 266,030,939,617.06
  5. Step 5: Solve for x
    x = 266,030,939,617.06/454,407.55
  6. Step 6: Final answer
    x = 585,445.69

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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.