Home / 1,329,042.40-1,993,855.20-430,331.20

Finding the Fourth Proportional to 1,329,042.40, 1,993,855.20 and 430,331.20

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Solution

The fourth proportional to 1,329,042.40, 1,993,855.20 and 430,331.20 is: 645,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,042.40 : 1,993,855.20 = 430,331.20 : x
  2. Step 2: Convert to fraction form
    1,329,042.40/1,993,855.20 = 430,331.20/x
  3. Step 3: Cross multiply
    1,329,042.40x = 1,993,855.20 × 430,331.20
  4. Step 4: Simplify right side
    1,329,042.40x = 858,018,100,842.24
  5. Step 5: Solve for x
    x = 858,018,100,842.24/1,329,042.40
  6. Step 6: Final answer
    x = 645,591.22

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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.