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Finding the Fourth Proportional to 688,012.68, 949,489 and 382,090.44

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Solution

The fourth proportional to 688,012.68, 949,489 and 382,090.44 is: 527,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,012.68 : 949,489 = 382,090.44 : x
  2. Step 2: Convert to fraction form
    688,012.68/949,489 = 382,090.44/x
  3. Step 3: Cross multiply
    688,012.68x = 949,489 × 382,090.44
  4. Step 4: Simplify right side
    688,012.68x = 362,790,669,785.16
  5. Step 5: Solve for x
    x = 362,790,669,785.16/688,012.68
  6. Step 6: Final answer
    x = 527,302.30

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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.