Home / 765,639.36-1,147,895.28-260,064.09

Finding the Fourth Proportional to 765,639.36, 1,147,895.28 and 260,064.09

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Solution

The fourth proportional to 765,639.36, 1,147,895.28 and 260,064.09 is: 389,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,639.36 : 1,147,895.28 = 260,064.09 : x
  2. Step 2: Convert to fraction form
    765,639.36/1,147,895.28 = 260,064.09/x
  3. Step 3: Cross multiply
    765,639.36x = 1,147,895.28 × 260,064.09
  4. Step 4: Simplify right side
    765,639.36x = 298,526,341,408.50
  5. Step 5: Solve for x
    x = 298,526,341,408.50/765,639.36
  6. Step 6: Final answer
    x = 389,904.64

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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.