Home / 642,958.90-964,478.45-169,644.72

Finding the Fourth Proportional to 642,958.90, 964,478.45 and 169,644.72

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Solution

The fourth proportional to 642,958.90, 964,478.45 and 169,644.72 is: 254,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,958.90 : 964,478.45 = 169,644.72 : x
  2. Step 2: Convert to fraction form
    642,958.90/964,478.45 = 169,644.72/x
  3. Step 3: Cross multiply
    642,958.90x = 964,478.45 × 169,644.72
  4. Step 4: Simplify right side
    642,958.90x = 163,618,676,596.28
  5. Step 5: Solve for x
    x = 163,618,676,596.28/642,958.90
  6. Step 6: Final answer
    x = 254,477.66

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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.