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Finding the Fourth Proportional to 648,798.72, 895,184.64 and 380,474.88

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Solution

The fourth proportional to 648,798.72, 895,184.64 and 380,474.88 is: 524,962.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,798.72 : 895,184.64 = 380,474.88 : x
  2. Step 2: Convert to fraction form
    648,798.72/895,184.64 = 380,474.88/x
  3. Step 3: Cross multiply
    648,798.72x = 895,184.64 × 380,474.88
  4. Step 4: Simplify right side
    648,798.72x = 340,595,268,481.84
  5. Step 5: Solve for x
    x = 340,595,268,481.84/648,798.72
  6. Step 6: Final answer
    x = 524,962.92

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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.