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Finding the Fourth Proportional to 722,693.06, 997,303.49 and 400,396.69

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Solution

The fourth proportional to 722,693.06, 997,303.49 and 400,396.69 is: 552,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,693.06 : 997,303.49 = 400,396.69 : x
  2. Step 2: Convert to fraction form
    722,693.06/997,303.49 = 400,396.69/x
  3. Step 3: Cross multiply
    722,693.06x = 997,303.49 × 400,396.69
  4. Step 4: Simplify right side
    722,693.06x = 399,317,011,826.21
  5. Step 5: Solve for x
    x = 399,317,011,826.21/722,693.06
  6. Step 6: Final answer
    x = 552,540.26

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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.