Home / 685,110.80-1,027,666.20-211,795.40

Finding the Fourth Proportional to 685,110.80, 1,027,666.20 and 211,795.40

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Solution

The fourth proportional to 685,110.80, 1,027,666.20 and 211,795.40 is: 317,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,110.80 : 1,027,666.20 = 211,795.40 : x
  2. Step 2: Convert to fraction form
    685,110.80/1,027,666.20 = 211,795.40/x
  3. Step 3: Cross multiply
    685,110.80x = 1,027,666.20 × 211,795.40
  4. Step 4: Simplify right side
    685,110.80x = 217,654,973,895.48
  5. Step 5: Solve for x
    x = 217,654,973,895.48/685,110.80
  6. Step 6: Final answer
    x = 317,693.10

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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.