Home / 1,078,123.80-1,617,380.10-447,101.40

Finding the Fourth Proportional to 1,078,123.80, 1,617,380.10 and 447,101.40

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Solution

The fourth proportional to 1,078,123.80, 1,617,380.10 and 447,101.40 is: 670,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,123.80 : 1,617,380.10 = 447,101.40 : x
  2. Step 2: Convert to fraction form
    1,078,123.80/1,617,380.10 = 447,101.40/x
  3. Step 3: Cross multiply
    1,078,123.80x = 1,617,380.10 × 447,101.40
  4. Step 4: Simplify right side
    1,078,123.80x = 723,132,907,042.14
  5. Step 5: Solve for x
    x = 723,132,907,042.14/1,078,123.80
  6. Step 6: Final answer
    x = 670,732.72

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1.5x scale

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.