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Finding the Fourth Proportional to 556,042.36, 767,269.76 and 394,838.58

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Solution

The fourth proportional to 556,042.36, 767,269.76 and 394,838.58 is: 544,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,042.36 : 767,269.76 = 394,838.58 : x
  2. Step 2: Convert to fraction form
    556,042.36/767,269.76 = 394,838.58/x
  3. Step 3: Cross multiply
    556,042.36x = 767,269.76 × 394,838.58
  4. Step 4: Simplify right side
    556,042.36x = 302,947,702,515.34
  5. Step 5: Solve for x
    x = 302,947,702,515.34/556,042.36
  6. Step 6: Final answer
    x = 544,828.46

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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.