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Finding the Fourth Proportional to 722,484.80, 997,061.84 and 400,194.86

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Solution

The fourth proportional to 722,484.80, 997,061.84 and 400,194.86 is: 552,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,484.80 : 997,061.84 = 400,194.86 : x
  2. Step 2: Convert to fraction form
    722,484.80/997,061.84 = 400,194.86/x
  3. Step 3: Cross multiply
    722,484.80x = 997,061.84 × 400,194.86
  4. Step 4: Simplify right side
    722,484.80x = 399,019,017,984.59
  5. Step 5: Solve for x
    x = 399,019,017,984.59/722,484.80
  6. Step 6: Final answer
    x = 552,287.08

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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.