Home / 628,847.40-942,407.10-403,516.20

Finding the Fourth Proportional to 628,847.40, 942,407.10 and 403,516.20

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Solution

The fourth proportional to 628,847.40, 942,407.10 and 403,516.20 is: 604,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,847.40 : 942,407.10 = 403,516.20 : x
  2. Step 2: Convert to fraction form
    628,847.40/942,407.10 = 403,516.20/x
  3. Step 3: Cross multiply
    628,847.40x = 942,407.10 × 403,516.20
  4. Step 4: Simplify right side
    628,847.40x = 380,276,531,845.02
  5. Step 5: Solve for x
    x = 380,276,531,845.02/628,847.40
  6. Step 6: Final answer
    x = 604,719.89

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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.