Home / 1,291,891.12-1,936,533.98-812,461.54

Finding the Fourth Proportional to 1,291,891.12, 1,936,533.98 and 812,461.54

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Solution

The fourth proportional to 1,291,891.12, 1,936,533.98 and 812,461.54 is: 1,217,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,891.12 : 1,936,533.98 = 812,461.54 : x
  2. Step 2: Convert to fraction form
    1,291,891.12/1,936,533.98 = 812,461.54/x
  3. Step 3: Cross multiply
    1,291,891.12x = 1,936,533.98 × 812,461.54
  4. Step 4: Simplify right side
    1,291,891.12x = 1,573,359,379,653.13
  5. Step 5: Solve for x
    x = 1,573,359,379,653.13/1,291,891.12
  6. Step 6: Final answer
    x = 1,217,873.05

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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.