Home / 765,325.07-1,147,941.12-285,460.37

Finding the Fourth Proportional to 765,325.07, 1,147,941.12 and 285,460.37

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Solution

The fourth proportional to 765,325.07, 1,147,941.12 and 285,460.37 is: 428,173.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,325.07 : 1,147,941.12 = 285,460.37 : x
  2. Step 2: Convert to fraction form
    765,325.07/1,147,941.12 = 285,460.37/x
  3. Step 3: Cross multiply
    765,325.07x = 1,147,941.12 × 285,460.37
  4. Step 4: Simplify right side
    765,325.07x = 327,691,691,113.71
  5. Step 5: Solve for x
    x = 327,691,691,113.71/765,325.07
  6. Step 6: Final answer
    x = 428,173.21

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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.