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Finding the Fourth Proportional to 448,424.63, 618,476.07 and 287,294.77

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Solution

The fourth proportional to 448,424.63, 618,476.07 and 287,294.77 is: 396,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,424.63 : 618,476.07 = 287,294.77 : x
  2. Step 2: Convert to fraction form
    448,424.63/618,476.07 = 287,294.77/x
  3. Step 3: Cross multiply
    448,424.63x = 618,476.07 × 287,294.77
  4. Step 4: Simplify right side
    448,424.63x = 177,684,940,281.15
  5. Step 5: Solve for x
    x = 177,684,940,281.15/448,424.63
  6. Step 6: Final answer
    x = 396,242.60

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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.