Home / 817,675.38-1,128,380.70-455,099.39

Finding the Fourth Proportional to 817,675.38, 1,128,380.70 and 455,099.39

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Solution

The fourth proportional to 817,675.38, 1,128,380.70 and 455,099.39 is: 628,030.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,675.38 : 1,128,380.70 = 455,099.39 : x
  2. Step 2: Convert to fraction form
    817,675.38/1,128,380.70 = 455,099.39/x
  3. Step 3: Cross multiply
    817,675.38x = 1,128,380.70 × 455,099.39
  4. Step 4: Simplify right side
    817,675.38x = 513,525,368,257.77
  5. Step 5: Solve for x
    x = 513,525,368,257.77/817,675.38
  6. Step 6: Final answer
    x = 628,030.86

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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.