Home / 515,398,381.73-711,243,788.08-280,444,994.13

Finding the Fourth Proportional to 515,398,381.73, 711,243,788.08 and 280,444,994.13

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Solution

The fourth proportional to 515,398,381.73, 711,243,788.08 and 280,444,994.13 is: 387,010,838.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,398,381.73 : 711,243,788.08 = 280,444,994.13 : x
  2. Step 2: Convert to fraction form
    515,398,381.73/711,243,788.08 = 280,444,994.13/x
  3. Step 3: Cross multiply
    515,398,381.73x = 711,243,788.08 × 280,444,994.13
  4. Step 4: Simplify right side
    515,398,381.73x = 199,464,759,972,377,184
  5. Step 5: Solve for x
    x = 199,464,759,972,377,184/515,398,381.73
  6. Step 6: Final answer
    x = 387,010,838.69

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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.