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Finding the Fourth Proportional to 722,473.90, 997,014.05 and 400,204.87

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Solution

The fourth proportional to 722,473.90, 997,014.05 and 400,204.87 is: 552,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,473.90 : 997,014.05 = 400,204.87 : x
  2. Step 2: Convert to fraction form
    722,473.90/997,014.05 = 400,204.87/x
  3. Step 3: Cross multiply
    722,473.90x = 997,014.05 × 400,204.87
  4. Step 4: Simplify right side
    722,473.90x = 399,009,878,268.42
  5. Step 5: Solve for x
    x = 399,009,878,268.42/722,473.90
  6. Step 6: Final answer
    x = 552,282.76

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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.