Home / 817,690.07-1,128,400.82-455,114.02

Finding the Fourth Proportional to 817,690.07, 1,128,400.82 and 455,114.02

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Solution

The fourth proportional to 817,690.07, 1,128,400.82 and 455,114.02 is: 628,050.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,690.07 : 1,128,400.82 = 455,114.02 : x
  2. Step 2: Convert to fraction form
    817,690.07/1,128,400.82 = 455,114.02/x
  3. Step 3: Cross multiply
    817,690.07x = 1,128,400.82 × 455,114.02
  4. Step 4: Simplify right side
    817,690.07x = 513,551,033,361.50
  5. Step 5: Solve for x
    x = 513,551,033,361.50/817,690.07
  6. Step 6: Final answer
    x = 628,050.96

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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.