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Finding the Fourth Proportional to 448,483.17, 618,751.52 and 287,427.02

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Solution

The fourth proportional to 448,483.17, 618,751.52 and 287,427.02 is: 396,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,483.17 : 618,751.52 = 287,427.02 : x
  2. Step 2: Convert to fraction form
    448,483.17/618,751.52 = 287,427.02/x
  3. Step 3: Cross multiply
    448,483.17x = 618,751.52 × 287,427.02
  4. Step 4: Simplify right side
    448,483.17x = 177,845,905,514.07
  5. Step 5: Solve for x
    x = 177,845,905,514.07/448,483.17
  6. Step 6: Final answer
    x = 396,549.79

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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.