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Finding the Fourth Proportional to 663,896,010.60, 995,844,015.90 and 405,615,684.60

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Solution

The fourth proportional to 663,896,010.60, 995,844,015.90 and 405,615,684.60 is: 608,423,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,896,010.60 : 995,844,015.90 = 405,615,684.60 : x
  2. Step 2: Convert to fraction form
    663,896,010.60/995,844,015.90 = 405,615,684.60/x
  3. Step 3: Cross multiply
    663,896,010.60x = 995,844,015.90 × 405,615,684.60
  4. Step 4: Simplify right side
    663,896,010.60x = 403,929,952,264,091,776
  5. Step 5: Solve for x
    x = 403,929,952,264,091,776/663,896,010.60
  6. Step 6: Final answer
    x = 608,423,526.90

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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.