Home / 976,536.15-1,347,023.57-645,391.55

Finding the Fourth Proportional to 976,536.15, 1,347,023.57 and 645,391.55

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Solution

The fourth proportional to 976,536.15, 1,347,023.57 and 645,391.55 is: 890,246.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,536.15 : 1,347,023.57 = 645,391.55 : x
  2. Step 2: Convert to fraction form
    976,536.15/1,347,023.57 = 645,391.55/x
  3. Step 3: Cross multiply
    976,536.15x = 1,347,023.57 × 645,391.55
  4. Step 4: Simplify right side
    976,536.15x = 869,357,619,766.76
  5. Step 5: Solve for x
    x = 869,357,619,766.76/976,536.15
  6. Step 6: Final answer
    x = 890,246.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.