Home / 1,242,943.65-1,859,986.80-862,077.60

Finding the Fourth Proportional to 1,242,943.65, 1,859,986.80 and 862,077.60

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Solution

The fourth proportional to 1,242,943.65, 1,859,986.80 and 862,077.60 is: 1,290,044.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,943.65 : 1,859,986.80 = 862,077.60 : x
  2. Step 2: Convert to fraction form
    1,242,943.65/1,859,986.80 = 862,077.60/x
  3. Step 3: Cross multiply
    1,242,943.65x = 1,859,986.80 × 862,077.60
  4. Step 4: Simplify right side
    1,242,943.65x = 1,603,452,956,575.68
  5. Step 5: Solve for x
    x = 1,603,452,956,575.68/1,242,943.65
  6. Step 6: Final answer
    x = 1,290,044.77

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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.