Home / 428,746.44-643,113.43-104,535.84

Finding the Fourth Proportional to 428,746.44, 643,113.43 and 104,535.84

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Solution

The fourth proportional to 428,746.44, 643,113.43 and 104,535.84 is: 156,802.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,746.44 : 643,113.43 = 104,535.84 : x
  2. Step 2: Convert to fraction form
    428,746.44/643,113.43 = 104,535.84/x
  3. Step 3: Cross multiply
    428,746.44x = 643,113.43 × 104,535.84
  4. Step 4: Simplify right side
    428,746.44x = 67,228,402,620.33
  5. Step 5: Solve for x
    x = 67,228,402,620.33/428,746.44
  6. Step 6: Final answer
    x = 156,802.24

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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.