Home / 915,504.40-1,263,142.64-528,292.88

Finding the Fourth Proportional to 915,504.40, 1,263,142.64 and 528,292.88

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Solution

The fourth proportional to 915,504.40, 1,263,142.64 and 528,292.88 is: 728,897.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,504.40 : 1,263,142.64 = 528,292.88 : x
  2. Step 2: Convert to fraction form
    915,504.40/1,263,142.64 = 528,292.88/x
  3. Step 3: Cross multiply
    915,504.40x = 1,263,142.64 × 528,292.88
  4. Step 4: Simplify right side
    915,504.40x = 667,309,263,136.40
  5. Step 5: Solve for x
    x = 667,309,263,136.40/915,504.40
  6. Step 6: Final answer
    x = 728,897.93

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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.