Home / 821,136.78-1,133,668.98-563,437.08

Finding the Fourth Proportional to 821,136.78, 1,133,668.98 and 563,437.08

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Solution

The fourth proportional to 821,136.78, 1,133,668.98 and 563,437.08 is: 777,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,136.78 : 1,133,668.98 = 563,437.08 : x
  2. Step 2: Convert to fraction form
    821,136.78/1,133,668.98 = 563,437.08/x
  3. Step 3: Cross multiply
    821,136.78x = 1,133,668.98 × 563,437.08
  4. Step 4: Simplify right side
    821,136.78x = 638,751,139,777.78
  5. Step 5: Solve for x
    x = 638,751,139,777.78/821,136.78
  6. Step 6: Final answer
    x = 777,886.41

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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.