Home / 550,985.63-760,318.44-309,221.51

Finding the Fourth Proportional to 550,985.63, 760,318.44 and 309,221.51

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Solution

The fourth proportional to 550,985.63, 760,318.44 and 309,221.51 is: 426,702.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,985.63 : 760,318.44 = 309,221.51 : x
  2. Step 2: Convert to fraction form
    550,985.63/760,318.44 = 309,221.51/x
  3. Step 3: Cross multiply
    550,985.63x = 760,318.44 × 309,221.51
  4. Step 4: Simplify right side
    550,985.63x = 235,106,817,998.44
  5. Step 5: Solve for x
    x = 235,106,817,998.44/550,985.63
  6. Step 6: Final answer
    x = 426,702.27

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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.