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Finding the Fourth Proportional to 722,710.62, 997,348.59 and 400,425.75

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Solution

The fourth proportional to 722,710.62, 997,348.59 and 400,425.75 is: 552,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,710.62 : 997,348.59 = 400,425.75 : x
  2. Step 2: Convert to fraction form
    722,710.62/997,348.59 = 400,425.75/x
  3. Step 3: Cross multiply
    722,710.62x = 997,348.59 × 400,425.75
  4. Step 4: Simplify right side
    722,710.62x = 399,364,057,162.19
  5. Step 5: Solve for x
    x = 399,364,057,162.19/722,710.62
  6. Step 6: Final answer
    x = 552,591.93

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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.