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Finding the Fourth Proportional to 722,476.64, 997,050.59 and 400,186.70

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Solution

The fourth proportional to 722,476.64, 997,050.59 and 400,186.70 is: 552,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,476.64 : 997,050.59 = 400,186.70 : x
  2. Step 2: Convert to fraction form
    722,476.64/997,050.59 = 400,186.70/x
  3. Step 3: Cross multiply
    722,476.64x = 997,050.59 × 400,186.70
  4. Step 4: Simplify right side
    722,476.64x = 399,006,383,598.61
  5. Step 5: Solve for x
    x = 399,006,383,598.61/722,476.64
  6. Step 6: Final answer
    x = 552,275.82

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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.