Home / 817,674.38-1,128,379.32-455,098.39

Finding the Fourth Proportional to 817,674.38, 1,128,379.32 and 455,098.39

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Solution

The fourth proportional to 817,674.38, 1,128,379.32 and 455,098.39 is: 628,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,674.38 : 1,128,379.32 = 455,098.39 : x
  2. Step 2: Convert to fraction form
    817,674.38/1,128,379.32 = 455,098.39/x
  3. Step 3: Cross multiply
    817,674.38x = 1,128,379.32 × 455,098.39
  4. Step 4: Simplify right side
    817,674.38x = 513,523,611,841.30
  5. Step 5: Solve for x
    x = 513,523,611,841.30/817,674.38
  6. Step 6: Final answer
    x = 628,029.48

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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.