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Finding the Fourth Proportional to 777,053.84, 1,072,049.88 and 470,909.39

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Solution

The fourth proportional to 777,053.84, 1,072,049.88 and 470,909.39 is: 649,682.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,053.84 : 1,072,049.88 = 470,909.39 : x
  2. Step 2: Convert to fraction form
    777,053.84/1,072,049.88 = 470,909.39/x
  3. Step 3: Cross multiply
    777,053.84x = 1,072,049.88 × 470,909.39
  4. Step 4: Simplify right side
    777,053.84x = 504,838,349,680.12
  5. Step 5: Solve for x
    x = 504,838,349,680.12/777,053.84
  6. Step 6: Final answer
    x = 649,682.59

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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.