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Finding the Fourth Proportional to 700,699.73, 966,965.59 and 378,409.80

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Solution

The fourth proportional to 700,699.73, 966,965.59 and 378,409.80 is: 522,205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,699.73 : 966,965.59 = 378,409.80 : x
  2. Step 2: Convert to fraction form
    700,699.73/966,965.59 = 378,409.80/x
  3. Step 3: Cross multiply
    700,699.73x = 966,965.59 × 378,409.80
  4. Step 4: Simplify right side
    700,699.73x = 365,909,251,459.14
  5. Step 5: Solve for x
    x = 365,909,251,459.14/700,699.73
  6. Step 6: Final answer
    x = 522,205.50

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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.