Home / 823,407.70-1,235,111.55-557,295.70

Finding the Fourth Proportional to 823,407.70, 1,235,111.55 and 557,295.70

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Solution

The fourth proportional to 823,407.70, 1,235,111.55 and 557,295.70 is: 835,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,407.70 : 1,235,111.55 = 557,295.70 : x
  2. Step 2: Convert to fraction form
    823,407.70/1,235,111.55 = 557,295.70/x
  3. Step 3: Cross multiply
    823,407.70x = 1,235,111.55 × 557,295.70
  4. Step 4: Simplify right side
    823,407.70x = 688,322,355,835.34
  5. Step 5: Solve for x
    x = 688,322,355,835.34/823,407.70
  6. Step 6: Final answer
    x = 835,943.55

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Double scale
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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.