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Finding the Fourth Proportional to 448,440.60, 618,824.70 and 278,671.08

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Solution

The fourth proportional to 448,440.60, 618,824.70 and 278,671.08 is: 384,551.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,440.60 : 618,824.70 = 278,671.08 : x
  2. Step 2: Convert to fraction form
    448,440.60/618,824.70 = 278,671.08/x
  3. Step 3: Cross multiply
    448,440.60x = 618,824.70 × 278,671.08
  4. Step 4: Simplify right side
    448,440.60x = 172,448,547,479.68
  5. Step 5: Solve for x
    x = 172,448,547,479.68/448,440.60
  6. Step 6: Final answer
    x = 384,551.59

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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.