Home / 991,742.80-1,489,169.40-571,838.80

Finding the Fourth Proportional to 991,742.80, 1,489,169.40 and 571,838.80

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Solution

The fourth proportional to 991,742.80, 1,489,169.40 and 571,838.80 is: 858,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,742.80 : 1,489,169.40 = 571,838.80 : x
  2. Step 2: Convert to fraction form
    991,742.80/1,489,169.40 = 571,838.80/x
  3. Step 3: Cross multiply
    991,742.80x = 1,489,169.40 × 571,838.80
  4. Step 4: Simplify right side
    991,742.80x = 851,564,842,692.72
  5. Step 5: Solve for x
    x = 851,564,842,692.72/991,742.80
  6. Step 6: Final answer
    x = 858,654.93

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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.