Home / 817,765.41-1,128,516.12-455,181.51

Finding the Fourth Proportional to 817,765.41, 1,128,516.12 and 455,181.51

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Solution

The fourth proportional to 817,765.41, 1,128,516.12 and 455,181.51 is: 628,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,765.41 : 1,128,516.12 = 455,181.51 : x
  2. Step 2: Convert to fraction form
    817,765.41/1,128,516.12 = 455,181.51/x
  3. Step 3: Cross multiply
    817,765.41x = 1,128,516.12 × 455,181.51
  4. Step 4: Simplify right side
    817,765.41x = 513,679,671,560.94
  5. Step 5: Solve for x
    x = 513,679,671,560.94/817,765.41
  6. Step 6: Final answer
    x = 628,150.40

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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.