Home / 910,661.28-1,256,801.85-528,665.28

Finding the Fourth Proportional to 910,661.28, 1,256,801.85 and 528,665.28

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Solution

The fourth proportional to 910,661.28, 1,256,801.85 and 528,665.28 is: 729,609.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,661.28 : 1,256,801.85 = 528,665.28 : x
  2. Step 2: Convert to fraction form
    910,661.28/1,256,801.85 = 528,665.28/x
  3. Step 3: Cross multiply
    910,661.28x = 1,256,801.85 × 528,665.28
  4. Step 4: Simplify right side
    910,661.28x = 664,427,501,934.77
  5. Step 5: Solve for x
    x = 664,427,501,934.77/910,661.28
  6. Step 6: Final answer
    x = 729,609.92

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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.