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Finding the Fourth Proportional to 675,012.30, 931,517.82 and 369,090.06

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Solution

The fourth proportional to 675,012.30, 931,517.82 and 369,090.06 is: 509,344.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,012.30 : 931,517.82 = 369,090.06 : x
  2. Step 2: Convert to fraction form
    675,012.30/931,517.82 = 369,090.06/x
  3. Step 3: Cross multiply
    675,012.30x = 931,517.82 × 369,090.06
  4. Step 4: Simplify right side
    675,012.30x = 343,813,968,074.87
  5. Step 5: Solve for x
    x = 343,813,968,074.87/675,012.30
  6. Step 6: Final answer
    x = 509,344.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.