Home / 449,617,022.07-620,127,948.92-386,997,992.43

Finding the Fourth Proportional to 449,617,022.07, 620,127,948.92 and 386,997,992.43

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Solution

The fourth proportional to 449,617,022.07, 620,127,948.92 and 386,997,992.43 is: 533,761,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,617,022.07 : 620,127,948.92 = 386,997,992.43 : x
  2. Step 2: Convert to fraction form
    449,617,022.07/620,127,948.92 = 386,997,992.43/x
  3. Step 3: Cross multiply
    449,617,022.07x = 620,127,948.92 × 386,997,992.43
  4. Step 4: Simplify right side
    449,617,022.07x = 239,988,271,279,838,592
  5. Step 5: Solve for x
    x = 239,988,271,279,838,592/449,617,022.07
  6. Step 6: Final answer
    x = 533,761,533.70

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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.