Home / 738,761.34-1,019,446.76-428,639.94

Finding the Fourth Proportional to 738,761.34, 1,019,446.76 and 428,639.94

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Solution

The fourth proportional to 738,761.34, 1,019,446.76 and 428,639.94 is: 591,497.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,761.34 : 1,019,446.76 = 428,639.94 : x
  2. Step 2: Convert to fraction form
    738,761.34/1,019,446.76 = 428,639.94/x
  3. Step 3: Cross multiply
    738,761.34x = 1,019,446.76 × 428,639.94
  4. Step 4: Simplify right side
    738,761.34x = 436,975,598,039.59
  5. Step 5: Solve for x
    x = 436,975,598,039.59/738,761.34
  6. Step 6: Final answer
    x = 591,497.65

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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.