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Finding the Fourth Proportional to 450,145.56, 675,694.13 and 439,980.57

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Solution

The fourth proportional to 450,145.56, 675,694.13 and 439,980.57 is: 660,435.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,145.56 : 675,694.13 = 439,980.57 : x
  2. Step 2: Convert to fraction form
    450,145.56/675,694.13 = 439,980.57/x
  3. Step 3: Cross multiply
    450,145.56x = 675,694.13 × 439,980.57
  4. Step 4: Simplify right side
    450,145.56x = 297,292,286,263.15
  5. Step 5: Solve for x
    x = 297,292,286,263.15/450,145.56
  6. Step 6: Final answer
    x = 660,435.89

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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.