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Finding the Fourth Proportional to 642,313.60, 886,232.64 and 370,464.64

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Solution

The fourth proportional to 642,313.60, 886,232.64 and 370,464.64 is: 511,148.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,313.60 : 886,232.64 = 370,464.64 : x
  2. Step 2: Convert to fraction form
    642,313.60/886,232.64 = 370,464.64/x
  3. Step 3: Cross multiply
    642,313.60x = 886,232.64 × 370,464.64
  4. Step 4: Simplify right side
    642,313.60x = 328,317,855,933.85
  5. Step 5: Solve for x
    x = 328,317,855,933.85/642,313.60
  6. Step 6: Final answer
    x = 511,148.85

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1.5x scale

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.