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Finding the Fourth Proportional to 722,878.22, 997,574.28 and 400,593.62

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Solution

The fourth proportional to 722,878.22, 997,574.28 and 400,593.62 is: 552,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,878.22 : 997,574.28 = 400,593.62 : x
  2. Step 2: Convert to fraction form
    722,878.22/997,574.28 = 400,593.62/x
  3. Step 3: Cross multiply
    722,878.22x = 997,574.28 × 400,593.62
  4. Step 4: Simplify right side
    722,878.22x = 399,621,892,044.09
  5. Step 5: Solve for x
    x = 399,621,892,044.09/722,878.22
  6. Step 6: Final answer
    x = 552,820.49

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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.