Home / 499,646.36-689,318.34-318,325.83

Finding the Fourth Proportional to 499,646.36, 689,318.34 and 318,325.83

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Solution

The fourth proportional to 499,646.36, 689,318.34 and 318,325.83 is: 439,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,646.36 : 689,318.34 = 318,325.83 : x
  2. Step 2: Convert to fraction form
    499,646.36/689,318.34 = 318,325.83/x
  3. Step 3: Cross multiply
    499,646.36x = 689,318.34 × 318,325.83
  4. Step 4: Simplify right side
    499,646.36x = 219,427,832,714.72
  5. Step 5: Solve for x
    x = 219,427,832,714.72/499,646.36
  6. Step 6: Final answer
    x = 439,166.28

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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.