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Finding the Fourth Proportional to 615,903.80, 923,855.70 and 450,015.80

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Solution

The fourth proportional to 615,903.80, 923,855.70 and 450,015.80 is: 675,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,903.80 : 923,855.70 = 450,015.80 : x
  2. Step 2: Convert to fraction form
    615,903.80/923,855.70 = 450,015.80/x
  3. Step 3: Cross multiply
    615,903.80x = 923,855.70 × 450,015.80
  4. Step 4: Simplify right side
    615,903.80x = 415,749,661,920.06
  5. Step 5: Solve for x
    x = 415,749,661,920.06/615,903.80
  6. Step 6: Final answer
    x = 675,023.70

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Similar ratio
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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.