Home / 1,176,739.60-1,765,570.20-428,861.20

Finding the Fourth Proportional to 1,176,739.60, 1,765,570.20 and 428,861.20

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Solution

The fourth proportional to 1,176,739.60, 1,765,570.20 and 428,861.20 is: 643,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176,739.60 : 1,765,570.20 = 428,861.20 : x
  2. Step 2: Convert to fraction form
    1,176,739.60/1,765,570.20 = 428,861.20/x
  3. Step 3: Cross multiply
    1,176,739.60x = 1,765,570.20 × 428,861.20
  4. Step 4: Simplify right side
    1,176,739.60x = 757,184,554,656.24
  5. Step 5: Solve for x
    x = 757,184,554,656.24/1,176,739.60
  6. Step 6: Final answer
    x = 643,459.74

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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.