Home / 939,847.76-1,296,955.14-510,118.76

Finding the Fourth Proportional to 939,847.76, 1,296,955.14 and 510,118.76

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Solution

The fourth proportional to 939,847.76, 1,296,955.14 and 510,118.76 is: 703,945.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,847.76 : 1,296,955.14 = 510,118.76 : x
  2. Step 2: Convert to fraction form
    939,847.76/1,296,955.14 = 510,118.76/x
  3. Step 3: Cross multiply
    939,847.76x = 1,296,955.14 × 510,118.76
  4. Step 4: Simplify right side
    939,847.76x = 661,601,147,792.43
  5. Step 5: Solve for x
    x = 661,601,147,792.43/939,847.76
  6. Step 6: Final answer
    x = 703,945.02

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Half scale
Find fourth proportional to 1,879,695.52, 2,593,910.28 and 1,020,237.52
Double scale
Find fourth proportional to 939,848.76, 1,296,956.52 and 510,119.76
Similar ratio
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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.