Home / 910,763.76-1,256,758.56-528,715.92

Finding the Fourth Proportional to 910,763.76, 1,256,758.56 and 528,715.92

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Solution

The fourth proportional to 910,763.76, 1,256,758.56 and 528,715.92 is: 729,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,763.76 : 1,256,758.56 = 528,715.92 : x
  2. Step 2: Convert to fraction form
    910,763.76/1,256,758.56 = 528,715.92/x
  3. Step 3: Cross multiply
    910,763.76x = 1,256,758.56 × 528,715.92
  4. Step 4: Simplify right side
    910,763.76x = 664,468,258,268.28
  5. Step 5: Solve for x
    x = 664,468,258,268.28/910,763.76
  6. Step 6: Final answer
    x = 729,572.57

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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.