Home / 679,875.44-1,019,667.36-280,412.60

Finding the Fourth Proportional to 679,875.44, 1,019,667.36 and 280,412.60

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Solution

The fourth proportional to 679,875.44, 1,019,667.36 and 280,412.60 is: 420,558.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,875.44 : 1,019,667.36 = 280,412.60 : x
  2. Step 2: Convert to fraction form
    679,875.44/1,019,667.36 = 280,412.60/x
  3. Step 3: Cross multiply
    679,875.44x = 1,019,667.36 × 280,412.60
  4. Step 4: Simplify right side
    679,875.44x = 285,927,575,552.74
  5. Step 5: Solve for x
    x = 285,927,575,552.74/679,875.44
  6. Step 6: Final answer
    x = 420,558.77

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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.