Home / 724,122.82-999,274.35-401,830.30

Finding the Fourth Proportional to 724,122.82, 999,274.35 and 401,830.30

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Solution

The fourth proportional to 724,122.82, 999,274.35 and 401,830.30 is: 554,517.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,122.82 : 999,274.35 = 401,830.30 : x
  2. Step 2: Convert to fraction form
    724,122.82/999,274.35 = 401,830.30/x
  3. Step 3: Cross multiply
    724,122.82x = 999,274.35 × 401,830.30
  4. Step 4: Simplify right side
    724,122.82x = 401,538,711,842.81
  5. Step 5: Solve for x
    x = 401,538,711,842.81/724,122.82
  6. Step 6: Final answer
    x = 554,517.41

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Similar ratio
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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.