Home / 1,069,125.58-1,475,393.21-639,405.69

Finding the Fourth Proportional to 1,069,125.58, 1,475,393.21 and 639,405.69

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Solution

The fourth proportional to 1,069,125.58, 1,475,393.21 and 639,405.69 is: 882,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,125.58 : 1,475,393.21 = 639,405.69 : x
  2. Step 2: Convert to fraction form
    1,069,125.58/1,475,393.21 = 639,405.69/x
  3. Step 3: Cross multiply
    1,069,125.58x = 1,475,393.21 × 639,405.69
  4. Step 4: Simplify right side
    1,069,125.58x = 943,374,813,461.37
  5. Step 5: Solve for x
    x = 943,374,813,461.37/1,069,125.58
  6. Step 6: Final answer
    x = 882,379.80

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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.