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Finding the Fourth Proportional to 556,322.18, 767,822.90 and 326,879.42

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Solution

The fourth proportional to 556,322.18, 767,822.90 and 326,879.42 is: 451,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,322.18 : 767,822.90 = 326,879.42 : x
  2. Step 2: Convert to fraction form
    556,322.18/767,822.90 = 326,879.42/x
  3. Step 3: Cross multiply
    556,322.18x = 767,822.90 × 326,879.42
  4. Step 4: Simplify right side
    556,322.18x = 250,985,498,741.21
  5. Step 5: Solve for x
    x = 250,985,498,741.21/556,322.18
  6. Step 6: Final answer
    x = 451,151.35

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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.