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Finding the Fourth Proportional to 721,915.34, 995,807.32 and 463,705.36

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Solution

The fourth proportional to 721,915.34, 995,807.32 and 463,705.36 is: 639,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,915.34 : 995,807.32 = 463,705.36 : x
  2. Step 2: Convert to fraction form
    721,915.34/995,807.32 = 463,705.36/x
  3. Step 3: Cross multiply
    721,915.34x = 995,807.32 × 463,705.36
  4. Step 4: Simplify right side
    721,915.34x = 461,761,188,162.45
  5. Step 5: Solve for x
    x = 461,761,188,162.45/721,915.34
  6. Step 6: Final answer
    x = 639,633.44

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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.