Home / 910,395.20-1,256,770.56-528,348.16

Finding the Fourth Proportional to 910,395.20, 1,256,770.56 and 528,348.16

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Solution

The fourth proportional to 910,395.20, 1,256,770.56 and 528,348.16 is: 729,367.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,395.20 : 1,256,770.56 = 528,348.16 : x
  2. Step 2: Convert to fraction form
    910,395.20/1,256,770.56 = 528,348.16/x
  3. Step 3: Cross multiply
    910,395.20x = 1,256,770.56 × 528,348.16
  4. Step 4: Simplify right side
    910,395.20x = 664,012,412,918.17
  5. Step 5: Solve for x
    x = 664,012,412,918.17/910,395.20
  6. Step 6: Final answer
    x = 729,367.22

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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.