Home / 1,078,136.80-1,615,455.60-678,061.60

Finding the Fourth Proportional to 1,078,136.80, 1,615,455.60 and 678,061.60

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Solution

The fourth proportional to 1,078,136.80, 1,615,455.60 and 678,061.60 is: 1,015,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,136.80 : 1,615,455.60 = 678,061.60 : x
  2. Step 2: Convert to fraction form
    1,078,136.80/1,615,455.60 = 678,061.60/x
  3. Step 3: Cross multiply
    1,078,136.80x = 1,615,455.60 × 678,061.60
  4. Step 4: Simplify right side
    1,078,136.80x = 1,095,378,408,864.96
  5. Step 5: Solve for x
    x = 1,095,378,408,864.96/1,078,136.80
  6. Step 6: Final answer
    x = 1,015,992.04

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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.