Home / 709,467.05-979,086.15-403,587.77

Finding the Fourth Proportional to 709,467.05, 979,086.15 and 403,587.77

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Solution

The fourth proportional to 709,467.05, 979,086.15 and 403,587.77 is: 556,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,467.05 : 979,086.15 = 403,587.77 : x
  2. Step 2: Convert to fraction form
    709,467.05/979,086.15 = 403,587.77/x
  3. Step 3: Cross multiply
    709,467.05x = 979,086.15 × 403,587.77
  4. Step 4: Simplify right side
    709,467.05x = 395,147,191,020.96
  5. Step 5: Solve for x
    x = 395,147,191,020.96/709,467.05
  6. Step 6: Final answer
    x = 556,963.41

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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.