Home / 808,615.80-1,212,923.70-209,572.20

Finding the Fourth Proportional to 808,615.80, 1,212,923.70 and 209,572.20

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Solution

The fourth proportional to 808,615.80, 1,212,923.70 and 209,572.20 is: 314,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,615.80 : 1,212,923.70 = 209,572.20 : x
  2. Step 2: Convert to fraction form
    808,615.80/1,212,923.70 = 209,572.20/x
  3. Step 3: Cross multiply
    808,615.80x = 1,212,923.70 × 209,572.20
  4. Step 4: Simplify right side
    808,615.80x = 254,195,088,241.14
  5. Step 5: Solve for x
    x = 254,195,088,241.14/808,615.80
  6. Step 6: Final answer
    x = 314,358.30

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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.