Home / 991,215.70-1,485,839.40-457,806.40

Finding the Fourth Proportional to 991,215.70, 1,485,839.40 and 457,806.40

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Solution

The fourth proportional to 991,215.70, 1,485,839.40 and 457,806.40 is: 686,255.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,215.70 : 1,485,839.40 = 457,806.40 : x
  2. Step 2: Convert to fraction form
    991,215.70/1,485,839.40 = 457,806.40/x
  3. Step 3: Cross multiply
    991,215.70x = 1,485,839.40 × 457,806.40
  4. Step 4: Simplify right side
    991,215.70x = 680,226,786,692.16
  5. Step 5: Solve for x
    x = 680,226,786,692.16/991,215.70
  6. Step 6: Final answer
    x = 686,255.06

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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.