Home / 930,923.78-1,284,676.02-528,515.78

Finding the Fourth Proportional to 930,923.78, 1,284,676.02 and 528,515.78

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Solution

The fourth proportional to 930,923.78, 1,284,676.02 and 528,515.78 is: 729,352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,923.78 : 1,284,676.02 = 528,515.78 : x
  2. Step 2: Convert to fraction form
    930,923.78/1,284,676.02 = 528,515.78/x
  3. Step 3: Cross multiply
    930,923.78x = 1,284,676.02 × 528,515.78
  4. Step 4: Simplify right side
    930,923.78x = 678,971,548,757.60
  5. Step 5: Solve for x
    x = 678,971,548,757.60/930,923.78
  6. Step 6: Final answer
    x = 729,352.46

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Half scale
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Double scale
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Similar ratio
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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.