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Finding the Fourth Proportional to 722,587.80, 997,232.40 and 400,398.96

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Solution

The fourth proportional to 722,587.80, 997,232.40 and 400,398.96 is: 552,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,587.80 : 997,232.40 = 400,398.96 : x
  2. Step 2: Convert to fraction form
    722,587.80/997,232.40 = 400,398.96/x
  3. Step 3: Cross multiply
    722,587.80x = 997,232.40 × 400,398.96
  4. Step 4: Simplify right side
    722,587.80x = 399,290,815,838.30
  5. Step 5: Solve for x
    x = 399,290,815,838.30/722,587.80
  6. Step 6: Final answer
    x = 552,584.50

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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.