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Finding the Fourth Proportional to 721,570.15, 995,871.93 and 415,586.98

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Solution

The fourth proportional to 721,570.15, 995,871.93 and 415,586.98 is: 573,570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,570.15 : 995,871.93 = 415,586.98 : x
  2. Step 2: Convert to fraction form
    721,570.15/995,871.93 = 415,586.98/x
  3. Step 3: Cross multiply
    721,570.15x = 995,871.93 × 415,586.98
  4. Step 4: Simplify right side
    721,570.15x = 413,871,407,855.47
  5. Step 5: Solve for x
    x = 413,871,407,855.47/721,570.15
  6. Step 6: Final answer
    x = 573,570.58

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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.