Home / 557,378,016.72-769,151,541.96-309,841,809.36

Finding the Fourth Proportional to 557,378,016.72, 769,151,541.96 and 309,841,809.36

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Solution

The fourth proportional to 557,378,016.72, 769,151,541.96 and 309,841,809.36 is: 427,564,952.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,378,016.72 : 769,151,541.96 = 309,841,809.36 : x
  2. Step 2: Convert to fraction form
    557,378,016.72/769,151,541.96 = 309,841,809.36/x
  3. Step 3: Cross multiply
    557,378,016.72x = 769,151,541.96 × 309,841,809.36
  4. Step 4: Simplify right side
    557,378,016.72x = 238,315,305,432,920,384
  5. Step 5: Solve for x
    x = 238,315,305,432,920,384/557,378,016.72
  6. Step 6: Final answer
    x = 427,564,952.84

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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.