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Finding the Fourth Proportional to 1,039,719.20, 1,559,578.80 and 976,733.60

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Solution

The fourth proportional to 1,039,719.20, 1,559,578.80 and 976,733.60 is: 1,465,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,719.20 : 1,559,578.80 = 976,733.60 : x
  2. Step 2: Convert to fraction form
    1,039,719.20/1,559,578.80 = 976,733.60/x
  3. Step 3: Cross multiply
    1,039,719.20x = 1,559,578.80 × 976,733.60
  4. Step 4: Simplify right side
    1,039,719.20x = 1,523,293,015,807.68
  5. Step 5: Solve for x
    x = 1,523,293,015,807.68/1,039,719.20
  6. Step 6: Final answer
    x = 1,465,100.40

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.