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Finding the Fourth Proportional to 518,912,630.88, 716,877,239.80 and 340,719,282.60

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Solution

The fourth proportional to 518,912,630.88, 716,877,239.80 and 340,719,282.60 is: 470,703,321.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,912,630.88 : 716,877,239.80 = 340,719,282.60 : x
  2. Step 2: Convert to fraction form
    518,912,630.88/716,877,239.80 = 340,719,282.60/x
  3. Step 3: Cross multiply
    518,912,630.88x = 716,877,239.80 × 340,719,282.60
  4. Step 4: Simplify right side
    518,912,630.88x = 244,253,898,856,924,160
  5. Step 5: Solve for x
    x = 244,253,898,856,924,160/518,912,630.88
  6. Step 6: Final answer
    x = 470,703,321.37

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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.