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Finding the Fourth Proportional to 722,971.79, 997,701.17 and 400,702.69

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Solution

The fourth proportional to 722,971.79, 997,701.17 and 400,702.69 is: 552,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,971.79 : 997,701.17 = 400,702.69 : x
  2. Step 2: Convert to fraction form
    722,971.79/997,701.17 = 400,702.69/x
  3. Step 3: Cross multiply
    722,971.79x = 997,701.17 × 400,702.69
  4. Step 4: Simplify right side
    722,971.79x = 399,781,542,635.15
  5. Step 5: Solve for x
    x = 399,781,542,635.15/722,971.79
  6. Step 6: Final answer
    x = 552,969.77

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Double scale
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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.