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Finding the Fourth Proportional to 556,039.40, 767,335.14 and 301,390.52

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Solution

The fourth proportional to 556,039.40, 767,335.14 and 301,390.52 is: 415,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,039.40 : 767,335.14 = 301,390.52 : x
  2. Step 2: Convert to fraction form
    556,039.40/767,335.14 = 301,390.52/x
  3. Step 3: Cross multiply
    556,039.40x = 767,335.14 × 301,390.52
  4. Step 4: Simplify right side
    556,039.40x = 231,267,536,858.87
  5. Step 5: Solve for x
    x = 231,267,536,858.87/556,039.40
  6. Step 6: Final answer
    x = 415,919.33

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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.