Home / 499,895.46-689,138.01-356,406.30

Finding the Fourth Proportional to 499,895.46, 689,138.01 and 356,406.30

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Solution

The fourth proportional to 499,895.46, 689,138.01 and 356,406.30 is: 491,328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,895.46 : 689,138.01 = 356,406.30 : x
  2. Step 2: Convert to fraction form
    499,895.46/689,138.01 = 356,406.30/x
  3. Step 3: Cross multiply
    499,895.46x = 689,138.01 × 356,406.30
  4. Step 4: Simplify right side
    499,895.46x = 245,613,128,333.46
  5. Step 5: Solve for x
    x = 245,613,128,333.46/499,895.46
  6. Step 6: Final answer
    x = 491,328.98

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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.