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Finding the Fourth Proportional to 602,431.40, 903,647.10 and 331,826.60

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Solution

The fourth proportional to 602,431.40, 903,647.10 and 331,826.60 is: 497,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,431.40 : 903,647.10 = 331,826.60 : x
  2. Step 2: Convert to fraction form
    602,431.40/903,647.10 = 331,826.60/x
  3. Step 3: Cross multiply
    602,431.40x = 903,647.10 × 331,826.60
  4. Step 4: Simplify right side
    602,431.40x = 299,854,144,792.86
  5. Step 5: Solve for x
    x = 299,854,144,792.86/602,431.40
  6. Step 6: Final answer
    x = 497,739.90

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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.