Home / 385,456,978,612.34-531,943,387,294.38-211,848,271,710.38

Finding the Fourth Proportional to 385,456,978,612.34, 531,943,387,294.38 and 211,848,271,710.38

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Solution

The fourth proportional to 385,456,978,612.34, 531,943,387,294.38 and 211,848,271,710.38 is: 292,357,626,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,612.34 : 531,943,387,294.38 = 211,848,271,710.38 : x
  2. Step 2: Convert to fraction form
    385,456,978,612.34/531,943,387,294.38 = 211,848,271,710.38/x
  3. Step 3: Cross multiply
    385,456,978,612.34x = 531,943,387,294.38 × 211,848,271,710.38
  4. Step 4: Simplify right side
    385,456,978,612.34x = 112,691,287,246,079,724,093,440
  5. Step 5: Solve for x
    x = 112,691,287,246,079,724,093,440/385,456,978,612.34
  6. Step 6: Final answer
    x = 292,357,626,139.69

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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.