Home / 989,620.48-1,364,833.92-688,533.76

Finding the Fourth Proportional to 989,620.48, 1,364,833.92 and 688,533.76

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Solution

The fourth proportional to 989,620.48, 1,364,833.92 and 688,533.76 is: 949,590.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,620.48 : 1,364,833.92 = 688,533.76 : x
  2. Step 2: Convert to fraction form
    989,620.48/1,364,833.92 = 688,533.76/x
  3. Step 3: Cross multiply
    989,620.48x = 1,364,833.92 × 688,533.76
  4. Step 4: Simplify right side
    989,620.48x = 939,734,230,713.14
  5. Step 5: Solve for x
    x = 939,734,230,713.14/989,620.48
  6. Step 6: Final answer
    x = 949,590.52

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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.