Home / 674,758.16-931,016.25-388,278.26

Finding the Fourth Proportional to 674,758.16, 931,016.25 and 388,278.26

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Solution

The fourth proportional to 674,758.16, 931,016.25 and 388,278.26 is: 535,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,758.16 : 931,016.25 = 388,278.26 : x
  2. Step 2: Convert to fraction form
    674,758.16/931,016.25 = 388,278.26/x
  3. Step 3: Cross multiply
    674,758.16x = 931,016.25 × 388,278.26
  4. Step 4: Simplify right side
    674,758.16x = 361,493,364,926.64
  5. Step 5: Solve for x
    x = 361,493,364,926.64/674,758.16
  6. Step 6: Final answer
    x = 535,737.67

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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.