Home / 991,080.10-1,486,620.18-430,114.60

Finding the Fourth Proportional to 991,080.10, 1,486,620.18 and 430,114.60

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Solution

The fourth proportional to 991,080.10, 1,486,620.18 and 430,114.60 is: 645,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,080.10 : 1,486,620.18 = 430,114.60 : x
  2. Step 2: Convert to fraction form
    991,080.10/1,486,620.18 = 430,114.60/x
  3. Step 3: Cross multiply
    991,080.10x = 1,486,620.18 × 430,114.60
  4. Step 4: Simplify right side
    991,080.10x = 639,417,044,072.63
  5. Step 5: Solve for x
    x = 639,417,044,072.63/991,080.10
  6. Step 6: Final answer
    x = 645,171.91

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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.