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Finding the Fourth Proportional to 722,571.04, 997,117.20 and 400,294.72

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Solution

The fourth proportional to 722,571.04, 997,117.20 and 400,294.72 is: 552,389.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,571.04 : 997,117.20 = 400,294.72 : x
  2. Step 2: Convert to fraction form
    722,571.04/997,117.20 = 400,294.72/x
  3. Step 3: Cross multiply
    722,571.04x = 997,117.20 × 400,294.72
  4. Step 4: Simplify right side
    722,571.04x = 399,140,750,381.18
  5. Step 5: Solve for x
    x = 399,140,750,381.18/722,571.04
  6. Step 6: Final answer
    x = 552,389.63

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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.