Home / 697,109.76-1,045,205.76-459,728.64

Finding the Fourth Proportional to 697,109.76, 1,045,205.76 and 459,728.64

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Solution

The fourth proportional to 697,109.76, 1,045,205.76 and 459,728.64 is: 689,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,109.76 : 1,045,205.76 = 459,728.64 : x
  2. Step 2: Convert to fraction form
    697,109.76/1,045,205.76 = 459,728.64/x
  3. Step 3: Cross multiply
    697,109.76x = 1,045,205.76 × 459,728.64
  4. Step 4: Simplify right side
    697,109.76x = 480,511,022,564.97
  5. Step 5: Solve for x
    x = 480,511,022,564.97/697,109.76
  6. Step 6: Final answer
    x = 689,290.34

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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.