Home / 1,293,518.70-1,785,109.59-720,558.72

Finding the Fourth Proportional to 1,293,518.70, 1,785,109.59 and 720,558.72

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Solution

The fourth proportional to 1,293,518.70, 1,785,109.59 and 720,558.72 is: 994,400.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,518.70 : 1,785,109.59 = 720,558.72 : x
  2. Step 2: Convert to fraction form
    1,293,518.70/1,785,109.59 = 720,558.72/x
  3. Step 3: Cross multiply
    1,293,518.70x = 1,785,109.59 × 720,558.72
  4. Step 4: Simplify right side
    1,293,518.70x = 1,286,276,281,230.12
  5. Step 5: Solve for x
    x = 1,286,276,281,230.12/1,293,518.70
  6. Step 6: Final answer
    x = 994,400.99

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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.