Home / 448,625.47-618,946.81-287,569.32

Finding the Fourth Proportional to 448,625.47, 618,946.81 and 287,569.32

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Solution

The fourth proportional to 448,625.47, 618,946.81 and 287,569.32 is: 396,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,625.47 : 618,946.81 = 287,569.32 : x
  2. Step 2: Convert to fraction form
    448,625.47/618,946.81 = 287,569.32/x
  3. Step 3: Cross multiply
    448,625.47x = 618,946.81 × 287,569.32
  4. Step 4: Simplify right side
    448,625.47x = 177,990,113,267.87
  5. Step 5: Solve for x
    x = 177,990,113,267.87/448,625.47
  6. Step 6: Final answer
    x = 396,745.45

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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.