Home / 926,761.41-1,389,873.60-278,311.44

Finding the Fourth Proportional to 926,761.41, 1,389,873.60 and 278,311.44

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Solution

The fourth proportional to 926,761.41, 1,389,873.60 and 278,311.44 is: 417,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,761.41 : 1,389,873.60 = 278,311.44 : x
  2. Step 2: Convert to fraction form
    926,761.41/1,389,873.60 = 278,311.44/x
  3. Step 3: Cross multiply
    926,761.41x = 1,389,873.60 × 278,311.44
  4. Step 4: Simplify right side
    926,761.41x = 386,817,727,071.90
  5. Step 5: Solve for x
    x = 386,817,727,071.90/926,761.41
  6. Step 6: Final answer
    x = 417,386.53

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1.5x scale

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.