Home / 910,128.76-1,256,227.53-528,278.56

Finding the Fourth Proportional to 910,128.76, 1,256,227.53 and 528,278.56

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Solution

The fourth proportional to 910,128.76, 1,256,227.53 and 528,278.56 is: 729,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,128.76 : 1,256,227.53 = 528,278.56 : x
  2. Step 2: Convert to fraction form
    910,128.76/1,256,227.53 = 528,278.56/x
  3. Step 3: Cross multiply
    910,128.76x = 1,256,227.53 × 528,278.56
  4. Step 4: Simplify right side
    910,128.76x = 663,638,070,580.76
  5. Step 5: Solve for x
    x = 663,638,070,580.76/910,128.76
  6. Step 6: Final answer
    x = 729,169.43

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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.