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Finding the Fourth Proportional to 640,054.76, 882,614.04 and 549,709.88

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Solution

The fourth proportional to 640,054.76, 882,614.04 and 549,709.88 is: 758,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,054.76 : 882,614.04 = 549,709.88 : x
  2. Step 2: Convert to fraction form
    640,054.76/882,614.04 = 549,709.88/x
  3. Step 3: Cross multiply
    640,054.76x = 882,614.04 × 549,709.88
  4. Step 4: Simplify right side
    640,054.76x = 485,181,658,014.72
  5. Step 5: Solve for x
    x = 485,181,658,014.72/640,054.76
  6. Step 6: Final answer
    x = 758,031.48

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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.