Home / 528,972,322.96-729,963,187.44-290,815,773.60

Finding the Fourth Proportional to 528,972,322.96, 729,963,187.44 and 290,815,773.60

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Solution

The fourth proportional to 528,972,322.96, 729,963,187.44 and 290,815,773.60 is: 401,315,531.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,972,322.96 : 729,963,187.44 = 290,815,773.60 : x
  2. Step 2: Convert to fraction form
    528,972,322.96/729,963,187.44 = 290,815,773.60/x
  3. Step 3: Cross multiply
    528,972,322.96x = 729,963,187.44 × 290,815,773.60
  4. Step 4: Simplify right side
    528,972,322.96x = 212,284,809,054,885,440
  5. Step 5: Solve for x
    x = 212,284,809,054,885,440/528,972,322.96
  6. Step 6: Final answer
    x = 401,315,531.72

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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.