Home / 728,764.58-1,005,696.50-406,495.55

Finding the Fourth Proportional to 728,764.58, 1,005,696.50 and 406,495.55

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Solution

The fourth proportional to 728,764.58, 1,005,696.50 and 406,495.55 is: 560,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,764.58 : 1,005,696.50 = 406,495.55 : x
  2. Step 2: Convert to fraction form
    728,764.58/1,005,696.50 = 406,495.55/x
  3. Step 3: Cross multiply
    728,764.58x = 1,005,696.50 × 406,495.55
  4. Step 4: Simplify right side
    728,764.58x = 408,811,151,900.58
  5. Step 5: Solve for x
    x = 408,811,151,900.58/728,764.58
  6. Step 6: Final answer
    x = 560,964.63

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1.5x scale

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.