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Finding the Fourth Proportional to 566,886.90, 782,303.89 and 312,238.09

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Solution

The fourth proportional to 566,886.90, 782,303.89 and 312,238.09 is: 430,888.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,886.90 : 782,303.89 = 312,238.09 : x
  2. Step 2: Convert to fraction form
    566,886.90/782,303.89 = 312,238.09/x
  3. Step 3: Cross multiply
    566,886.90x = 782,303.89 × 312,238.09
  4. Step 4: Simplify right side
    566,886.90x = 244,265,073,195.90
  5. Step 5: Solve for x
    x = 244,265,073,195.90/566,886.90
  6. Step 6: Final answer
    x = 430,888.55

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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.