Home / 683,940.95-943,887.38-378,010.74

Finding the Fourth Proportional to 683,940.95, 943,887.38 and 378,010.74

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Solution

The fourth proportional to 683,940.95, 943,887.38 and 378,010.74 is: 521,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,940.95 : 943,887.38 = 378,010.74 : x
  2. Step 2: Convert to fraction form
    683,940.95/943,887.38 = 378,010.74/x
  3. Step 3: Cross multiply
    683,940.95x = 943,887.38 × 378,010.74
  4. Step 4: Simplify right side
    683,940.95x = 356,799,565,100.41
  5. Step 5: Solve for x
    x = 356,799,565,100.41/683,940.95
  6. Step 6: Final answer
    x = 521,681.83

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1.5x scale

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.