Home / 515,429,251,960.84-711,314,413,364.76-287,058,457,327.30

Finding the Fourth Proportional to 515,429,251,960.84, 711,314,413,364.76 and 287,058,457,327.30

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Solution

The fourth proportional to 515,429,251,960.84, 711,314,413,364.76 and 287,058,457,327.30 is: 396,152,949,019.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,429,251,960.84 : 711,314,413,364.76 = 287,058,457,327.30 : x
  2. Step 2: Convert to fraction form
    515,429,251,960.84/711,314,413,364.76 = 287,058,457,327.30/x
  3. Step 3: Cross multiply
    515,429,251,960.84x = 711,314,413,364.76 × 287,058,457,327.30
  4. Step 4: Simplify right side
    515,429,251,960.84x = 204,188,818,175,161,396,101,120
  5. Step 5: Solve for x
    x = 204,188,818,175,161,396,101,120/515,429,251,960.84
  6. Step 6: Final answer
    x = 396,152,949,019.42

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Double scale
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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.