Home / 877,669.01-1,211,078.34-485,148.96

Finding the Fourth Proportional to 877,669.01, 1,211,078.34 and 485,148.96

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Solution

The fourth proportional to 877,669.01, 1,211,078.34 and 485,148.96 is: 669,447.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,669.01 : 1,211,078.34 = 485,148.96 : x
  2. Step 2: Convert to fraction form
    877,669.01/1,211,078.34 = 485,148.96/x
  3. Step 3: Cross multiply
    877,669.01x = 1,211,078.34 × 485,148.96
  4. Step 4: Simplify right side
    877,669.01x = 587,553,397,129.53
  5. Step 5: Solve for x
    x = 587,553,397,129.53/877,669.01
  6. Step 6: Final answer
    x = 669,447.58

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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.