Home / 1,288,645.40-1,930,343.70-657,914.60

Finding the Fourth Proportional to 1,288,645.40, 1,930,343.70 and 657,914.60

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Solution

The fourth proportional to 1,288,645.40, 1,930,343.70 and 657,914.60 is: 985,532.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,645.40 : 1,930,343.70 = 657,914.60 : x
  2. Step 2: Convert to fraction form
    1,288,645.40/1,930,343.70 = 657,914.60/x
  3. Step 3: Cross multiply
    1,288,645.40x = 1,930,343.70 × 657,914.60
  4. Step 4: Simplify right side
    1,288,645.40x = 1,270,001,303,248.02
  5. Step 5: Solve for x
    x = 1,270,001,303,248.02/1,288,645.40
  6. Step 6: Final answer
    x = 985,532.02

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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.