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Finding the Fourth Proportional to 707,904,607.29, 976,858,473.47 and 394,624,963.77

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Solution

The fourth proportional to 707,904,607.29, 976,858,473.47 and 394,624,963.77 is: 544,554,641.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,904,607.29 : 976,858,473.47 = 394,624,963.77 : x
  2. Step 2: Convert to fraction form
    707,904,607.29/976,858,473.47 = 394,624,963.77/x
  3. Step 3: Cross multiply
    707,904,607.29x = 976,858,473.47 × 394,624,963.77
  4. Step 4: Simplify right side
    707,904,607.29x = 385,492,739,699,543,104
  5. Step 5: Solve for x
    x = 385,492,739,699,543,104/707,904,607.29
  6. Step 6: Final answer
    x = 544,554,641.59

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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.