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Finding the Fourth Proportional to 555,254,192.36, 765,803,995.11 and 488,129,628.51

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Solution

The fourth proportional to 555,254,192.36, 765,803,995.11 and 488,129,628.51 is: 673,226,109.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,254,192.36 : 765,803,995.11 = 488,129,628.51 : x
  2. Step 2: Convert to fraction form
    555,254,192.36/765,803,995.11 = 488,129,628.51/x
  3. Step 3: Cross multiply
    555,254,192.36x = 765,803,995.11 × 488,129,628.51
  4. Step 4: Simplify right side
    555,254,192.36x = 373,811,619,644,518,144
  5. Step 5: Solve for x
    x = 373,811,619,644,518,144/555,254,192.36
  6. Step 6: Final answer
    x = 673,226,109.39

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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.