Home / 1,285,280.70-1,927,921.05-812,888.70

Finding the Fourth Proportional to 1,285,280.70, 1,927,921.05 and 812,888.70

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Solution

The fourth proportional to 1,285,280.70, 1,927,921.05 and 812,888.70 is: 1,219,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,280.70 : 1,927,921.05 = 812,888.70 : x
  2. Step 2: Convert to fraction form
    1,285,280.70/1,927,921.05 = 812,888.70/x
  3. Step 3: Cross multiply
    1,285,280.70x = 1,927,921.05 × 812,888.70
  4. Step 4: Simplify right side
    1,285,280.70x = 1,567,185,236,037.14
  5. Step 5: Solve for x
    x = 1,567,185,236,037.14/1,285,280.70
  6. Step 6: Final answer
    x = 1,219,333.05

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Similar ratio
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1.5x scale

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.