Home / 1,242,007.80-1,863,011.70-443,315.40

Finding the Fourth Proportional to 1,242,007.80, 1,863,011.70 and 443,315.40

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Solution

The fourth proportional to 1,242,007.80, 1,863,011.70 and 443,315.40 is: 664,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,007.80 : 1,863,011.70 = 443,315.40 : x
  2. Step 2: Convert to fraction form
    1,242,007.80/1,863,011.70 = 443,315.40/x
  3. Step 3: Cross multiply
    1,242,007.80x = 1,863,011.70 × 443,315.40
  4. Step 4: Simplify right side
    1,242,007.80x = 825,901,776,990.18
  5. Step 5: Solve for x
    x = 825,901,776,990.18/1,242,007.80
  6. Step 6: Final answer
    x = 664,973.10

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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.