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Finding the Fourth Proportional to 979,744.68, 1,470,069 and 447,428.88

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Solution

The fourth proportional to 979,744.68, 1,470,069 and 447,428.88 is: 671,349.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,744.68 : 1,470,069 = 447,428.88 : x
  2. Step 2: Convert to fraction form
    979,744.68/1,470,069 = 447,428.88/x
  3. Step 3: Cross multiply
    979,744.68x = 1,470,069 × 447,428.88
  4. Step 4: Simplify right side
    979,744.68x = 657,751,326,192.72
  5. Step 5: Solve for x
    x = 657,751,326,192.72/979,744.68
  6. Step 6: Final answer
    x = 671,349.73

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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.