Home / 1,178,140.80-1,767,211.20-1,086,902.40

Finding the Fourth Proportional to 1,178,140.80, 1,767,211.20 and 1,086,902.40

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Solution

The fourth proportional to 1,178,140.80, 1,767,211.20 and 1,086,902.40 is: 1,630,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,140.80 : 1,767,211.20 = 1,086,902.40 : x
  2. Step 2: Convert to fraction form
    1,178,140.80/1,767,211.20 = 1,086,902.40/x
  3. Step 3: Cross multiply
    1,178,140.80x = 1,767,211.20 × 1,086,902.40
  4. Step 4: Simplify right side
    1,178,140.80x = 1,920,786,094,586.88
  5. Step 5: Solve for x
    x = 1,920,786,094,586.88/1,178,140.80
  6. Step 6: Final answer
    x = 1,630,353.60

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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.