Home / 817,632.12-1,128,321.06-455,055.90

Finding the Fourth Proportional to 817,632.12, 1,128,321.06 and 455,055.90

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Solution

The fourth proportional to 817,632.12, 1,128,321.06 and 455,055.90 is: 627,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,632.12 : 1,128,321.06 = 455,055.90 : x
  2. Step 2: Convert to fraction form
    817,632.12/1,128,321.06 = 455,055.90/x
  3. Step 3: Cross multiply
    817,632.12x = 1,128,321.06 × 455,055.90
  4. Step 4: Simplify right side
    817,632.12x = 513,449,155,447.25
  5. Step 5: Solve for x
    x = 513,449,155,447.25/817,632.12
  6. Step 6: Final answer
    x = 627,970.87

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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.