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Finding the Fourth Proportional to 653,889.40, 902,393.94 and 367,408.60

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Solution

The fourth proportional to 653,889.40, 902,393.94 and 367,408.60 is: 507,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,889.40 : 902,393.94 = 367,408.60 : x
  2. Step 2: Convert to fraction form
    653,889.40/902,393.94 = 367,408.60/x
  3. Step 3: Cross multiply
    653,889.40x = 902,393.94 × 367,408.60
  4. Step 4: Simplify right side
    653,889.40x = 331,547,294,143.88
  5. Step 5: Solve for x
    x = 331,547,294,143.88/653,889.40
  6. Step 6: Final answer
    x = 507,038.80

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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.