Home / 898,705.18-1,240,221.54-511,501.59

Finding the Fourth Proportional to 898,705.18, 1,240,221.54 and 511,501.59

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Solution

The fourth proportional to 898,705.18, 1,240,221.54 and 511,501.59 is: 705,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,705.18 : 1,240,221.54 = 511,501.59 : x
  2. Step 2: Convert to fraction form
    898,705.18/1,240,221.54 = 511,501.59/x
  3. Step 3: Cross multiply
    898,705.18x = 1,240,221.54 × 511,501.59
  4. Step 4: Simplify right side
    898,705.18x = 634,375,289,662.25
  5. Step 5: Solve for x
    x = 634,375,289,662.25/898,705.18
  6. Step 6: Final answer
    x = 705,876.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.