Home / 780,454.20-1,170,098.10-425,868.60

Finding the Fourth Proportional to 780,454.20, 1,170,098.10 and 425,868.60

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Solution

The fourth proportional to 780,454.20, 1,170,098.10 and 425,868.60 is: 638,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,454.20 : 1,170,098.10 = 425,868.60 : x
  2. Step 2: Convert to fraction form
    780,454.20/1,170,098.10 = 425,868.60/x
  3. Step 3: Cross multiply
    780,454.20x = 1,170,098.10 × 425,868.60
  4. Step 4: Simplify right side
    780,454.20x = 498,308,039,709.66
  5. Step 5: Solve for x
    x = 498,308,039,709.66/780,454.20
  6. Step 6: Final answer
    x = 638,484.67

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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.