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Finding the Fourth Proportional to 485,850.63, 670,474.89 and 270,985.17

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Solution

The fourth proportional to 485,850.63, 670,474.89 and 270,985.17 is: 373,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,850.63 : 670,474.89 = 270,985.17 : x
  2. Step 2: Convert to fraction form
    485,850.63/670,474.89 = 270,985.17/x
  3. Step 3: Cross multiply
    485,850.63x = 670,474.89 × 270,985.17
  4. Step 4: Simplify right side
    485,850.63x = 181,688,752,047.38
  5. Step 5: Solve for x
    x = 181,688,752,047.38/485,850.63
  6. Step 6: Final answer
    x = 373,960.10

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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.