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Finding the Fourth Proportional to 520,549.44, 780,299.28 and 395,628

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Solution

The fourth proportional to 520,549.44, 780,299.28 and 395,628 is: 593,043.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,549.44 : 780,299.28 = 395,628 : x
  2. Step 2: Convert to fraction form
    520,549.44/780,299.28 = 395,628/x
  3. Step 3: Cross multiply
    520,549.44x = 780,299.28 × 395,628
  4. Step 4: Simplify right side
    520,549.44x = 308,708,243,547.84
  5. Step 5: Solve for x
    x = 308,708,243,547.84/520,549.44
  6. Step 6: Final answer
    x = 593,043.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.