Home / 913,709.32-1,260,928.83-505,817.98

Finding the Fourth Proportional to 913,709.32, 1,260,928.83 and 505,817.98

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Solution

The fourth proportional to 913,709.32, 1,260,928.83 and 505,817.98 is: 698,034.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,709.32 : 1,260,928.83 = 505,817.98 : x
  2. Step 2: Convert to fraction form
    913,709.32/1,260,928.83 = 505,817.98/x
  3. Step 3: Cross multiply
    913,709.32x = 1,260,928.83 × 505,817.98
  4. Step 4: Simplify right side
    913,709.32x = 637,800,473,714.36
  5. Step 5: Solve for x
    x = 637,800,473,714.36/913,709.32
  6. Step 6: Final answer
    x = 698,034.33

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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.