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Finding the Fourth Proportional to 722,477.40, 997,051.62 and 400,187.46

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Solution

The fourth proportional to 722,477.40, 997,051.62 and 400,187.46 is: 552,276.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,477.40 : 997,051.62 = 400,187.46 : x
  2. Step 2: Convert to fraction form
    722,477.40/997,051.62 = 400,187.46/x
  3. Step 3: Cross multiply
    722,477.40x = 997,051.62 × 400,187.46
  4. Step 4: Simplify right side
    722,477.40x = 399,007,555,296.69
  5. Step 5: Solve for x
    x = 399,007,555,296.69/722,477.40
  6. Step 6: Final answer
    x = 552,276.87

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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.