Home / 712,826.96-983,698.12-390,536.56

Finding the Fourth Proportional to 712,826.96, 983,698.12 and 390,536.56

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Solution

The fourth proportional to 712,826.96, 983,698.12 and 390,536.56 is: 538,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,826.96 : 983,698.12 = 390,536.56 : x
  2. Step 2: Convert to fraction form
    712,826.96/983,698.12 = 390,536.56/x
  3. Step 3: Cross multiply
    712,826.96x = 983,698.12 × 390,536.56
  4. Step 4: Simplify right side
    712,826.96x = 384,170,079,863.27
  5. Step 5: Solve for x
    x = 384,170,079,863.27/712,826.96
  6. Step 6: Final answer
    x = 538,938.76

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Double scale
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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.