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Finding the Fourth Proportional to 518,322,095.65, 777,483,143.48 and 503,973,188.65

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Solution

The fourth proportional to 518,322,095.65, 777,483,143.48 and 503,973,188.65 is: 755,959,782.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,322,095.65 : 777,483,143.48 = 503,973,188.65 : x
  2. Step 2: Convert to fraction form
    518,322,095.65/777,483,143.48 = 503,973,188.65/x
  3. Step 3: Cross multiply
    518,322,095.65x = 777,483,143.48 × 503,973,188.65
  4. Step 4: Simplify right side
    518,322,095.65x = 391,830,658,938,721,216
  5. Step 5: Solve for x
    x = 391,830,658,938,721,216/518,322,095.65
  6. Step 6: Final answer
    x = 755,959,782.98

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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.