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Finding the Fourth Proportional to 553,864.77, 764,334.09 and 299,215.98

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Solution

The fourth proportional to 553,864.77, 764,334.09 and 299,215.98 is: 412,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,864.77 : 764,334.09 = 299,215.98 : x
  2. Step 2: Convert to fraction form
    553,864.77/764,334.09 = 299,215.98/x
  3. Step 3: Cross multiply
    553,864.77x = 764,334.09 × 299,215.98
  4. Step 4: Simplify right side
    553,864.77x = 228,700,973,786.76
  5. Step 5: Solve for x
    x = 228,700,973,786.76/553,864.77
  6. Step 6: Final answer
    x = 412,918.43

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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.