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Finding the Fourth Proportional to 455,871.80, 682,823.55 and 377,139.80

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Solution

The fourth proportional to 455,871.80, 682,823.55 and 377,139.80 is: 564,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,871.80 : 682,823.55 = 377,139.80 : x
  2. Step 2: Convert to fraction form
    455,871.80/682,823.55 = 377,139.80/x
  3. Step 3: Cross multiply
    455,871.80x = 682,823.55 × 377,139.80
  4. Step 4: Simplify right side
    455,871.80x = 257,519,937,082.29
  5. Step 5: Solve for x
    x = 257,519,937,082.29/455,871.80
  6. Step 6: Final answer
    x = 564,895.52

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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.