Home / 943,415.80-1,415,123.70-628,487.80

Finding the Fourth Proportional to 943,415.80, 1,415,123.70 and 628,487.80

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Solution

The fourth proportional to 943,415.80, 1,415,123.70 and 628,487.80 is: 942,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    943,415.80 : 1,415,123.70 = 628,487.80 : x
  2. Step 2: Convert to fraction form
    943,415.80/1,415,123.70 = 628,487.80/x
  3. Step 3: Cross multiply
    943,415.80x = 1,415,123.70 × 628,487.80
  4. Step 4: Simplify right side
    943,415.80x = 889,387,980,940.86
  5. Step 5: Solve for x
    x = 889,387,980,940.86/943,415.80
  6. Step 6: Final answer
    x = 942,731.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.