Home / 817,743.26-1,128,485.74-455,159.34

Finding the Fourth Proportional to 817,743.26, 1,128,485.74 and 455,159.34

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Solution

The fourth proportional to 817,743.26, 1,128,485.74 and 455,159.34 is: 628,119.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,743.26 : 1,128,485.74 = 455,159.34 : x
  2. Step 2: Convert to fraction form
    817,743.26/1,128,485.74 = 455,159.34/x
  3. Step 3: Cross multiply
    817,743.26x = 1,128,485.74 × 455,159.34
  4. Step 4: Simplify right side
    817,743.26x = 513,640,824,617.81
  5. Step 5: Solve for x
    x = 513,640,824,617.81/817,743.26
  6. Step 6: Final answer
    x = 628,119.91

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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.