Home / 728,701.70-1,091,740.35-447,890.90

Finding the Fourth Proportional to 728,701.70, 1,091,740.35 and 447,890.90

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Solution

The fourth proportional to 728,701.70, 1,091,740.35 and 447,890.90 is: 671,029.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,701.70 : 1,091,740.35 = 447,890.90 : x
  2. Step 2: Convert to fraction form
    728,701.70/1,091,740.35 = 447,890.90/x
  3. Step 3: Cross multiply
    728,701.70x = 1,091,740.35 × 447,890.90
  4. Step 4: Simplify right side
    728,701.70x = 488,980,567,927.82
  5. Step 5: Solve for x
    x = 488,980,567,927.82/728,701.70
  6. Step 6: Final answer
    x = 671,029.82

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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.