Home / 1,217,721.78-1,826,545-578,485.68

Finding the Fourth Proportional to 1,217,721.78, 1,826,545 and 578,485.68

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Solution

The fourth proportional to 1,217,721.78, 1,826,545 and 578,485.68 is: 867,710.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,721.78 : 1,826,545 = 578,485.68 : x
  2. Step 2: Convert to fraction form
    1,217,721.78/1,826,545 = 578,485.68/x
  3. Step 3: Cross multiply
    1,217,721.78x = 1,826,545 × 578,485.68
  4. Step 4: Simplify right side
    1,217,721.78x = 1,056,630,126,375.60
  5. Step 5: Solve for x
    x = 1,056,630,126,375.60/1,217,721.78
  6. Step 6: Final answer
    x = 867,710.62

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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.