Home / 1,392,012.90-2,088,017.70-381,142.62

Finding the Fourth Proportional to 1,392,012.90, 2,088,017.70 and 381,142.62

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Solution

The fourth proportional to 1,392,012.90, 2,088,017.70 and 381,142.62 is: 571,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,012.90 : 2,088,017.70 = 381,142.62 : x
  2. Step 2: Convert to fraction form
    1,392,012.90/2,088,017.70 = 381,142.62/x
  3. Step 3: Cross multiply
    1,392,012.90x = 2,088,017.70 × 381,142.62
  4. Step 4: Simplify right side
    1,392,012.90x = 795,832,536,784.37
  5. Step 5: Solve for x
    x = 795,832,536,784.37/1,392,012.90
  6. Step 6: Final answer
    x = 571,713.48

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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.