Home / 910,123.76-1,256,220.63-528,273.56

Finding the Fourth Proportional to 910,123.76, 1,256,220.63 and 528,273.56

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Solution

The fourth proportional to 910,123.76, 1,256,220.63 and 528,273.56 is: 729,162.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,123.76 : 1,256,220.63 = 528,273.56 : x
  2. Step 2: Convert to fraction form
    910,123.76/1,256,220.63 = 528,273.56/x
  3. Step 3: Cross multiply
    910,123.76x = 1,256,220.63 × 528,273.56
  4. Step 4: Simplify right side
    910,123.76x = 663,628,147,496.09
  5. Step 5: Solve for x
    x = 663,628,147,496.09/910,123.76
  6. Step 6: Final answer
    x = 729,162.53

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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.