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Finding the Fourth Proportional to 549,379.61, 757,399.64 and 469,663.46

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Solution

The fourth proportional to 549,379.61, 757,399.64 and 469,663.46 is: 647,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,379.61 : 757,399.64 = 469,663.46 : x
  2. Step 2: Convert to fraction form
    549,379.61/757,399.64 = 469,663.46/x
  3. Step 3: Cross multiply
    549,379.61x = 757,399.64 × 469,663.46
  4. Step 4: Simplify right side
    549,379.61x = 355,722,929,389.84
  5. Step 5: Solve for x
    x = 355,722,929,389.84/549,379.61
  6. Step 6: Final answer
    x = 647,499.34

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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.