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Finding the Fourth Proportional to 550,985.58, 760,307.58 and 309,212.73

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Solution

The fourth proportional to 550,985.58, 760,307.58 and 309,212.73 is: 426,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,985.58 : 760,307.58 = 309,212.73 : x
  2. Step 2: Convert to fraction form
    550,985.58/760,307.58 = 309,212.73/x
  3. Step 3: Cross multiply
    550,985.58x = 760,307.58 × 309,212.73
  4. Step 4: Simplify right side
    550,985.58x = 235,096,782,451.49
  5. Step 5: Solve for x
    x = 235,096,782,451.49/550,985.58
  6. Step 6: Final answer
    x = 426,684.09

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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.