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Finding the Fourth Proportional to 612,986,936.80, 846,403,961.48 and 493,530,070

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Solution

The fourth proportional to 612,986,936.80, 846,403,961.48 and 493,530,070 is: 681,459,556.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,986,936.80 : 846,403,961.48 = 493,530,070 : x
  2. Step 2: Convert to fraction form
    612,986,936.80/846,403,961.48 = 493,530,070/x
  3. Step 3: Cross multiply
    612,986,936.80x = 846,403,961.48 × 493,530,070
  4. Step 4: Simplify right side
    612,986,936.80x = 417,725,806,355,034,048
  5. Step 5: Solve for x
    x = 417,725,806,355,034,048/612,986,936.80
  6. Step 6: Final answer
    x = 681,459,556.93

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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.