Home / 689,210.30-1,033,815.48-215,897.36

Finding the Fourth Proportional to 689,210.30, 1,033,815.48 and 215,897.36

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Solution

The fourth proportional to 689,210.30, 1,033,815.48 and 215,897.36 is: 323,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,210.30 : 1,033,815.48 = 215,897.36 : x
  2. Step 2: Convert to fraction form
    689,210.30/1,033,815.48 = 215,897.36/x
  3. Step 3: Cross multiply
    689,210.30x = 1,033,815.48 × 215,897.36
  4. Step 4: Simplify right side
    689,210.30x = 223,198,032,859.13
  5. Step 5: Solve for x
    x = 223,198,032,859.13/689,210.30
  6. Step 6: Final answer
    x = 323,846.05

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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.