Home / 1,283,775.48-1,925,039.79-643,804.74

Finding the Fourth Proportional to 1,283,775.48, 1,925,039.79 and 643,804.74

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Solution

The fourth proportional to 1,283,775.48, 1,925,039.79 and 643,804.74 is: 965,394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,775.48 : 1,925,039.79 = 643,804.74 : x
  2. Step 2: Convert to fraction form
    1,283,775.48/1,925,039.79 = 643,804.74/x
  3. Step 3: Cross multiply
    1,283,775.48x = 1,925,039.79 × 643,804.74
  4. Step 4: Simplify right side
    1,283,775.48x = 1,239,349,741,490.60
  5. Step 5: Solve for x
    x = 1,239,349,741,490.60/1,283,775.48
  6. Step 6: Final answer
    x = 965,394.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.