Home / 991,681.80-1,489,077.90-571,777.80

Finding the Fourth Proportional to 991,681.80, 1,489,077.90 and 571,777.80

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Solution

The fourth proportional to 991,681.80, 1,489,077.90 and 571,777.80 is: 858,563.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,681.80 : 1,489,077.90 = 571,777.80 : x
  2. Step 2: Convert to fraction form
    991,681.80/1,489,077.90 = 571,777.80/x
  3. Step 3: Cross multiply
    991,681.80x = 1,489,077.90 × 571,777.80
  4. Step 4: Simplify right side
    991,681.80x = 851,421,685,690.62
  5. Step 5: Solve for x
    x = 851,421,685,690.62/991,681.80
  6. Step 6: Final answer
    x = 858,563.39

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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.