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Finding the Fourth Proportional to 722,636.93, 997,237.01 and 400,347.24

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Solution

The fourth proportional to 722,636.93, 997,237.01 and 400,347.24 is: 552,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,636.93 : 997,237.01 = 400,347.24 : x
  2. Step 2: Convert to fraction form
    722,636.93/997,237.01 = 400,347.24/x
  3. Step 3: Cross multiply
    722,636.93x = 997,237.01 × 400,347.24
  4. Step 4: Simplify right side
    722,636.93x = 399,241,082,577.62
  5. Step 5: Solve for x
    x = 399,241,082,577.62/722,636.93
  6. Step 6: Final answer
    x = 552,478.11

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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.