Home / 1,423,397.80-2,131,986.30-1,105,359.40

Finding the Fourth Proportional to 1,423,397.80, 2,131,986.30 and 1,105,359.40

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Solution

The fourth proportional to 1,423,397.80, 2,131,986.30 and 1,105,359.40 is: 1,655,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,397.80 : 2,131,986.30 = 1,105,359.40 : x
  2. Step 2: Convert to fraction form
    1,423,397.80/2,131,986.30 = 1,105,359.40/x
  3. Step 3: Cross multiply
    1,423,397.80x = 2,131,986.30 × 1,105,359.40
  4. Step 4: Simplify right side
    1,423,397.80x = 2,356,611,097,376.22
  5. Step 5: Solve for x
    x = 2,356,611,097,376.22/1,423,397.80
  6. Step 6: Final answer
    x = 1,655,623.68

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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.