Home / 1,210,000.40-1,815,000.60-580,144.40

Finding the Fourth Proportional to 1,210,000.40, 1,815,000.60 and 580,144.40

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Solution

The fourth proportional to 1,210,000.40, 1,815,000.60 and 580,144.40 is: 870,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,000.40 : 1,815,000.60 = 580,144.40 : x
  2. Step 2: Convert to fraction form
    1,210,000.40/1,815,000.60 = 580,144.40/x
  3. Step 3: Cross multiply
    1,210,000.40x = 1,815,000.60 × 580,144.40
  4. Step 4: Simplify right side
    1,210,000.40x = 1,052,962,434,086.64
  5. Step 5: Solve for x
    x = 1,052,962,434,086.64/1,210,000.40
  6. Step 6: Final answer
    x = 870,216.60

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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.