Home / 821,390.77-1,133,486.08-458,808.85

Finding the Fourth Proportional to 821,390.77, 1,133,486.08 and 458,808.85

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Solution

The fourth proportional to 821,390.77, 1,133,486.08 and 458,808.85 is: 633,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,390.77 : 1,133,486.08 = 458,808.85 : x
  2. Step 2: Convert to fraction form
    821,390.77/1,133,486.08 = 458,808.85/x
  3. Step 3: Cross multiply
    821,390.77x = 1,133,486.08 × 458,808.85
  4. Step 4: Simplify right side
    821,390.77x = 520,053,444,855.81
  5. Step 5: Solve for x
    x = 520,053,444,855.81/821,390.77
  6. Step 6: Final answer
    x = 633,137.68

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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.