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Finding the Fourth Proportional to 555,041.94, 828,546.72 and 487,783.20

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Solution

The fourth proportional to 555,041.94, 828,546.72 and 487,783.20 is: 728,145.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,041.94 : 828,546.72 = 487,783.20 : x
  2. Step 2: Convert to fraction form
    555,041.94/828,546.72 = 487,783.20/x
  3. Step 3: Cross multiply
    555,041.94x = 828,546.72 × 487,783.20
  4. Step 4: Simplify right side
    555,041.94x = 404,151,170,431.10
  5. Step 5: Solve for x
    x = 404,151,170,431.10/555,041.94
  6. Step 6: Final answer
    x = 728,145.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.