Home / 1,139,721.40-1,709,735.70-391,996.60

Finding the Fourth Proportional to 1,139,721.40, 1,709,735.70 and 391,996.60

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Solution

The fourth proportional to 1,139,721.40, 1,709,735.70 and 391,996.60 is: 588,047.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,721.40 : 1,709,735.70 = 391,996.60 : x
  2. Step 2: Convert to fraction form
    1,139,721.40/1,709,735.70 = 391,996.60/x
  3. Step 3: Cross multiply
    1,139,721.40x = 1,709,735.70 × 391,996.60
  4. Step 4: Simplify right side
    1,139,721.40x = 670,210,581,298.62
  5. Step 5: Solve for x
    x = 670,210,581,298.62/1,139,721.40
  6. Step 6: Final answer
    x = 588,047.73

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1.5x scale

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.