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Finding the Fourth Proportional to 485,783.46, 670,588.44 and 304,598.60

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Solution

The fourth proportional to 485,783.46, 670,588.44 and 304,598.60 is: 420,476.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,783.46 : 670,588.44 = 304,598.60 : x
  2. Step 2: Convert to fraction form
    485,783.46/670,588.44 = 304,598.60/x
  3. Step 3: Cross multiply
    485,783.46x = 670,588.44 × 304,598.60
  4. Step 4: Simplify right side
    485,783.46x = 204,260,300,000.18
  5. Step 5: Solve for x
    x = 204,260,300,000.18/485,783.46
  6. Step 6: Final answer
    x = 420,476.03

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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.