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Finding the Fourth Proportional to 674,464.68, 930,955.20 and 445,189.32

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Solution

The fourth proportional to 674,464.68, 930,955.20 and 445,189.32 is: 614,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,464.68 : 930,955.20 = 445,189.32 : x
  2. Step 2: Convert to fraction form
    674,464.68/930,955.20 = 445,189.32/x
  3. Step 3: Cross multiply
    674,464.68x = 930,955.20 × 445,189.32
  4. Step 4: Simplify right side
    674,464.68x = 414,451,312,438.46
  5. Step 5: Solve for x
    x = 414,451,312,438.46/674,464.68
  6. Step 6: Final answer
    x = 614,489.28

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Double scale
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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.