Home / 5,178,709.40-7,768,064.10-2,659,285.40

Finding the Fourth Proportional to 5,178,709.40, 7,768,064.10 and 2,659,285.40

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Solution

The fourth proportional to 5,178,709.40, 7,768,064.10 and 2,659,285.40 is: 3,988,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178,709.40 : 7,768,064.10 = 2,659,285.40 : x
  2. Step 2: Convert to fraction form
    5,178,709.40/7,768,064.10 = 2,659,285.40/x
  3. Step 3: Cross multiply
    5,178,709.40x = 7,768,064.10 × 2,659,285.40
  4. Step 4: Simplify right side
    5,178,709.40x = 20,657,499,447,394.14
  5. Step 5: Solve for x
    x = 20,657,499,447,394.14/5,178,709.40
  6. Step 6: Final answer
    x = 3,988,928.10

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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.