Home / 930,840.40-1,395,429.54-398,087.20

Finding the Fourth Proportional to 930,840.40, 1,395,429.54 and 398,087.20

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Solution

The fourth proportional to 930,840.40, 1,395,429.54 and 398,087.20 is: 596,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,840.40 : 1,395,429.54 = 398,087.20 : x
  2. Step 2: Convert to fraction form
    930,840.40/1,395,429.54 = 398,087.20/x
  3. Step 3: Cross multiply
    930,840.40x = 1,395,429.54 × 398,087.20
  4. Step 4: Simplify right side
    930,840.40x = 555,502,638,375.89
  5. Step 5: Solve for x
    x = 555,502,638,375.89/930,840.40
  6. Step 6: Final answer
    x = 596,775.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.