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Finding the Fourth Proportional to 540,058,978.40, 810,088,467.60 and 531,449,634.20

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Solution

The fourth proportional to 540,058,978.40, 810,088,467.60 and 531,449,634.20 is: 797,174,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,058,978.40 : 810,088,467.60 = 531,449,634.20 : x
  2. Step 2: Convert to fraction form
    540,058,978.40/810,088,467.60 = 531,449,634.20/x
  3. Step 3: Cross multiply
    540,058,978.40x = 810,088,467.60 × 531,449,634.20
  4. Step 4: Simplify right side
    540,058,978.40x = 430,521,219,775,658,560
  5. Step 5: Solve for x
    x = 430,521,219,775,658,560/540,058,978.40
  6. Step 6: Final answer
    x = 797,174,451.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.