Home / 642,910.64-964,430.76-169,628.72

Finding the Fourth Proportional to 642,910.64, 964,430.76 and 169,628.72

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Solution

The fourth proportional to 642,910.64, 964,430.76 and 169,628.72 is: 254,460.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,910.64 : 964,430.76 = 169,628.72 : x
  2. Step 2: Convert to fraction form
    642,910.64/964,430.76 = 169,628.72/x
  3. Step 3: Cross multiply
    642,910.64x = 964,430.76 × 169,628.72
  4. Step 4: Simplify right side
    642,910.64x = 163,595,155,347.43
  5. Step 5: Solve for x
    x = 163,595,155,347.43/642,910.64
  6. Step 6: Final answer
    x = 254,460.18

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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.