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Finding the Fourth Proportional to 675,124.32, 931,906.17 and 388,758.54

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Solution

The fourth proportional to 675,124.32, 931,906.17 and 388,758.54 is: 536,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,124.32 : 931,906.17 = 388,758.54 : x
  2. Step 2: Convert to fraction form
    675,124.32/931,906.17 = 388,758.54/x
  3. Step 3: Cross multiply
    675,124.32x = 931,906.17 × 388,758.54
  4. Step 4: Simplify right side
    675,124.32x = 362,286,482,066.19
  5. Step 5: Solve for x
    x = 362,286,482,066.19/675,124.32
  6. Step 6: Final answer
    x = 536,621.88

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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.