Home / 656,959.20-985,438.80-213,727.20

Finding the Fourth Proportional to 656,959.20, 985,438.80 and 213,727.20

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Solution

The fourth proportional to 656,959.20, 985,438.80 and 213,727.20 is: 320,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,959.20 : 985,438.80 = 213,727.20 : x
  2. Step 2: Convert to fraction form
    656,959.20/985,438.80 = 213,727.20/x
  3. Step 3: Cross multiply
    656,959.20x = 985,438.80 × 213,727.20
  4. Step 4: Simplify right side
    656,959.20x = 210,615,075,495.36
  5. Step 5: Solve for x
    x = 210,615,075,495.36/656,959.20
  6. Step 6: Final answer
    x = 320,590.80

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Similar ratio
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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.