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Finding the Fourth Proportional to 550,689.89, 760,000.14 and 321,321.08

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Solution

The fourth proportional to 550,689.89, 760,000.14 and 321,321.08 is: 443,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,689.89 : 760,000.14 = 321,321.08 : x
  2. Step 2: Convert to fraction form
    550,689.89/760,000.14 = 321,321.08/x
  3. Step 3: Cross multiply
    550,689.89x = 760,000.14 × 321,321.08
  4. Step 4: Simplify right side
    550,689.89x = 244,204,064,313.67
  5. Step 5: Solve for x
    x = 244,204,064,313.67/550,689.89
  6. Step 6: Final answer
    x = 443,451.15

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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.