Home / 750,745.34-1,036,128.35-428,381.54

Finding the Fourth Proportional to 750,745.34, 1,036,128.35 and 428,381.54

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Solution

The fourth proportional to 750,745.34, 1,036,128.35 and 428,381.54 is: 591,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,745.34 : 1,036,128.35 = 428,381.54 : x
  2. Step 2: Convert to fraction form
    750,745.34/1,036,128.35 = 428,381.54/x
  3. Step 3: Cross multiply
    750,745.34x = 1,036,128.35 × 428,381.54
  4. Step 4: Simplify right side
    750,745.34x = 443,858,256,068.75
  5. Step 5: Solve for x
    x = 443,858,256,068.75/750,745.34
  6. Step 6: Final answer
    x = 591,223.46

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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.