Home / 527,721,690.30-728,255,649.54-289,568,438.44

Finding the Fourth Proportional to 527,721,690.30, 728,255,649.54 and 289,568,438.44

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Solution

The fourth proportional to 527,721,690.30, 728,255,649.54 and 289,568,438.44 is: 399,604,289.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,721,690.30 : 728,255,649.54 = 289,568,438.44 : x
  2. Step 2: Convert to fraction form
    527,721,690.30/728,255,649.54 = 289,568,438.44/x
  3. Step 3: Cross multiply
    527,721,690.30x = 728,255,649.54 × 289,568,438.44
  4. Step 4: Simplify right side
    527,721,690.30x = 210,879,851,222,405,696
  5. Step 5: Solve for x
    x = 210,879,851,222,405,696/527,721,690.30
  6. Step 6: Final answer
    x = 399,604,289.72

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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.