Home / 709,646.76-979,166.34-407,782.44

Finding the Fourth Proportional to 709,646.76, 979,166.34 and 407,782.44

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Solution

The fourth proportional to 709,646.76, 979,166.34 and 407,782.44 is: 562,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,646.76 : 979,166.34 = 407,782.44 : x
  2. Step 2: Convert to fraction form
    709,646.76/979,166.34 = 407,782.44/x
  3. Step 3: Cross multiply
    709,646.76x = 979,166.34 × 407,782.44
  4. Step 4: Simplify right side
    709,646.76x = 399,286,839,291.07
  5. Step 5: Solve for x
    x = 399,286,839,291.07/709,646.76
  6. Step 6: Final answer
    x = 562,655.76

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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.