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Finding the Fourth Proportional to 722,646.06, 997,170.86 and 400,276.19

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Solution

The fourth proportional to 722,646.06, 997,170.86 and 400,276.19 is: 552,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,646.06 : 997,170.86 = 400,276.19 : x
  2. Step 2: Convert to fraction form
    722,646.06/997,170.86 = 400,276.19/x
  3. Step 3: Cross multiply
    722,646.06x = 997,170.86 × 400,276.19
  4. Step 4: Simplify right side
    722,646.06x = 399,143,748,634.66
  5. Step 5: Solve for x
    x = 399,143,748,634.66/722,646.06
  6. Step 6: Final answer
    x = 552,336.44

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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.