Home / 738,760.34-1,019,445.38-428,638.94

Finding the Fourth Proportional to 738,760.34, 1,019,445.38 and 428,638.94

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Solution

The fourth proportional to 738,760.34, 1,019,445.38 and 428,638.94 is: 591,496.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,760.34 : 1,019,445.38 = 428,638.94 : x
  2. Step 2: Convert to fraction form
    738,760.34/1,019,445.38 = 428,638.94/x
  3. Step 3: Cross multiply
    738,760.34x = 1,019,445.38 × 428,638.94
  4. Step 4: Simplify right side
    738,760.34x = 436,973,987,071.10
  5. Step 5: Solve for x
    x = 436,973,987,071.10/738,760.34
  6. Step 6: Final answer
    x = 591,496.27

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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.