Home / 811,830.81-1,120,298.94-449,269.95

Finding the Fourth Proportional to 811,830.81, 1,120,298.94 and 449,269.95

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Solution

The fourth proportional to 811,830.81, 1,120,298.94 and 449,269.95 is: 619,977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,830.81 : 1,120,298.94 = 449,269.95 : x
  2. Step 2: Convert to fraction form
    811,830.81/1,120,298.94 = 449,269.95/x
  3. Step 3: Cross multiply
    811,830.81x = 1,120,298.94 × 449,269.95
  4. Step 4: Simplify right side
    811,830.81x = 503,316,648,758.85
  5. Step 5: Solve for x
    x = 503,316,648,758.85/811,830.81
  6. Step 6: Final answer
    x = 619,977.27

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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.