Home / 686,784.49-1,030,036.41-260,173.24

Finding the Fourth Proportional to 686,784.49, 1,030,036.41 and 260,173.24

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Solution

The fourth proportional to 686,784.49, 1,030,036.41 and 260,173.24 is: 390,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,784.49 : 1,030,036.41 = 260,173.24 : x
  2. Step 2: Convert to fraction form
    686,784.49/1,030,036.41 = 260,173.24/x
  3. Step 3: Cross multiply
    686,784.49x = 1,030,036.41 × 260,173.24
  4. Step 4: Simplify right side
    686,784.49x = 267,987,907,532.58
  5. Step 5: Solve for x
    x = 267,987,907,532.58/686,784.49
  6. Step 6: Final answer
    x = 390,206.70

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Double scale
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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.