Home / 628,822.40-942,369.60-403,491.20

Finding the Fourth Proportional to 628,822.40, 942,369.60 and 403,491.20

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Solution

The fourth proportional to 628,822.40, 942,369.60 and 403,491.20 is: 604,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,822.40 : 942,369.60 = 403,491.20 : x
  2. Step 2: Convert to fraction form
    628,822.40/942,369.60 = 403,491.20/x
  3. Step 3: Cross multiply
    628,822.40x = 942,369.60 × 403,491.20
  4. Step 4: Simplify right side
    628,822.40x = 380,237,840,747.52
  5. Step 5: Solve for x
    x = 380,237,840,747.52/628,822.40
  6. Step 6: Final answer
    x = 604,682.40

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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.