Home / 515,429,251,962.85-711,314,413,367.50-287,058,457,329.30

Finding the Fourth Proportional to 515,429,251,962.85, 711,314,413,367.50 and 287,058,457,329.30

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Solution

The fourth proportional to 515,429,251,962.85, 711,314,413,367.50 and 287,058,457,329.30 is: 396,152,949,022.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,429,251,962.85 : 711,314,413,367.50 = 287,058,457,329.30 : x
  2. Step 2: Convert to fraction form
    515,429,251,962.85/711,314,413,367.50 = 287,058,457,329.30/x
  3. Step 3: Cross multiply
    515,429,251,962.85x = 711,314,413,367.50 × 287,058,457,329.30
  4. Step 4: Simplify right side
    515,429,251,962.85x = 204,188,818,177,370,552,795,136
  5. Step 5: Solve for x
    x = 204,188,818,177,370,552,795,136/515,429,251,962.85
  6. Step 6: Final answer
    x = 396,152,949,022.16

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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.