Home / 808,631.80-1,212,947.70-209,588.20

Finding the Fourth Proportional to 808,631.80, 1,212,947.70 and 209,588.20

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Solution

The fourth proportional to 808,631.80, 1,212,947.70 and 209,588.20 is: 314,382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,631.80 : 1,212,947.70 = 209,588.20 : x
  2. Step 2: Convert to fraction form
    808,631.80/1,212,947.70 = 209,588.20/x
  3. Step 3: Cross multiply
    808,631.80x = 1,212,947.70 × 209,588.20
  4. Step 4: Simplify right side
    808,631.80x = 254,219,525,137.14
  5. Step 5: Solve for x
    x = 254,219,525,137.14/808,631.80
  6. Step 6: Final answer
    x = 314,382.30

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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.