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Finding the Fourth Proportional to 721,283.51, 995,284.51 and 415,459.36

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Solution

The fourth proportional to 721,283.51, 995,284.51 and 415,459.36 is: 573,283.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,283.51 : 995,284.51 = 415,459.36 : x
  2. Step 2: Convert to fraction form
    721,283.51/995,284.51 = 415,459.36/x
  3. Step 3: Cross multiply
    721,283.51x = 995,284.51 × 415,459.36
  4. Step 4: Simplify right side
    721,283.51x = 413,500,265,747.97
  5. Step 5: Solve for x
    x = 413,500,265,747.97/721,283.51
  6. Step 6: Final answer
    x = 573,283.96

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1.5x scale

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.