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Finding the Fourth Proportional to 722,695.95, 997,328.43 and 400,411.13

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Solution

The fourth proportional to 722,695.95, 997,328.43 and 400,411.13 is: 552,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,695.95 : 997,328.43 = 400,411.13 : x
  2. Step 2: Convert to fraction form
    722,695.95/997,328.43 = 400,411.13/x
  3. Step 3: Cross multiply
    722,695.95x = 997,328.43 × 400,411.13
  4. Step 4: Simplify right side
    722,695.95x = 399,341,398,650.78
  5. Step 5: Solve for x
    x = 399,341,398,650.78/722,695.95
  6. Step 6: Final answer
    x = 552,571.80

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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.