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Finding the Fourth Proportional to 1,635,491.77, 2,256,978.74 and 910,323.94

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Solution

The fourth proportional to 1,635,491.77, 2,256,978.74 and 910,323.94 is: 1,256,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635,491.77 : 2,256,978.74 = 910,323.94 : x
  2. Step 2: Convert to fraction form
    1,635,491.77/2,256,978.74 = 910,323.94/x
  3. Step 3: Cross multiply
    1,635,491.77x = 2,256,978.74 × 910,323.94
  4. Step 4: Simplify right side
    1,635,491.77x = 2,054,581,774,541.42
  5. Step 5: Solve for x
    x = 2,054,581,774,541.42/1,635,491.77
  6. Step 6: Final answer
    x = 1,256,247.09

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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.