Home / 1,289,000.20-1,932,917.10-578,662.60

Finding the Fourth Proportional to 1,289,000.20, 1,932,917.10 and 578,662.60

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Solution

The fourth proportional to 1,289,000.20, 1,932,917.10 and 578,662.60 is: 867,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,000.20 : 1,932,917.10 = 578,662.60 : x
  2. Step 2: Convert to fraction form
    1,289,000.20/1,932,917.10 = 578,662.60/x
  3. Step 3: Cross multiply
    1,289,000.20x = 1,932,917.10 × 578,662.60
  4. Step 4: Simplify right side
    1,289,000.20x = 1,118,506,834,670.46
  5. Step 5: Solve for x
    x = 1,118,506,834,670.46/1,289,000.20
  6. Step 6: Final answer
    x = 867,732.09

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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.