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Finding the Fourth Proportional to 722,725.74, 997,348.32 and 400,434.66

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Solution

The fourth proportional to 722,725.74, 997,348.32 and 400,434.66 is: 552,592.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,725.74 : 997,348.32 = 400,434.66 : x
  2. Step 2: Convert to fraction form
    722,725.74/997,348.32 = 400,434.66/x
  3. Step 3: Cross multiply
    722,725.74x = 997,348.32 × 400,434.66
  4. Step 4: Simplify right side
    722,725.74x = 399,372,835,420.77
  5. Step 5: Solve for x
    x = 399,372,835,420.77/722,725.74
  6. Step 6: Final answer
    x = 552,592.52

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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.