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Finding the Fourth Proportional to 424,613,509.76, 636,691,940.64 and 249,796,976.96

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Solution

The fourth proportional to 424,613,509.76, 636,691,940.64 and 249,796,976.96 is: 374,561,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,613,509.76 : 636,691,940.64 = 249,796,976.96 : x
  2. Step 2: Convert to fraction form
    424,613,509.76/636,691,940.64 = 249,796,976.96/x
  3. Step 3: Cross multiply
    424,613,509.76x = 636,691,940.64 × 249,796,976.96
  4. Step 4: Simplify right side
    424,613,509.76x = 159,043,722,026,667,776
  5. Step 5: Solve for x
    x = 159,043,722,026,667,776/424,613,509.76
  6. Step 6: Final answer
    x = 374,561,144.13

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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.