Home / 448,126.60-618,391.38-278,357.32

Finding the Fourth Proportional to 448,126.60, 618,391.38 and 278,357.32

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Solution

The fourth proportional to 448,126.60, 618,391.38 and 278,357.32 is: 384,118.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,126.60 : 618,391.38 = 278,357.32 : x
  2. Step 2: Convert to fraction form
    448,126.60/618,391.38 = 278,357.32/x
  3. Step 3: Cross multiply
    448,126.60x = 618,391.38 × 278,357.32
  4. Step 4: Simplify right side
    448,126.60x = 172,133,767,247.90
  5. Step 5: Solve for x
    x = 172,133,767,247.90/448,126.60
  6. Step 6: Final answer
    x = 384,118.61

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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.