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Finding the Fourth Proportional to 722,518.25, 997,075.08 and 400,249.22

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Solution

The fourth proportional to 722,518.25, 997,075.08 and 400,249.22 is: 552,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,518.25 : 997,075.08 = 400,249.22 : x
  2. Step 2: Convert to fraction form
    722,518.25/997,075.08 = 400,249.22/x
  3. Step 3: Cross multiply
    722,518.25x = 997,075.08 × 400,249.22
  4. Step 4: Simplify right side
    722,518.25x = 399,078,518,066.06
  5. Step 5: Solve for x
    x = 399,078,518,066.06/722,518.25
  6. Step 6: Final answer
    x = 552,343.86

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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.