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Finding the Fourth Proportional to 1,321,672.40, 1,823,920.76 and 748,700.32

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Solution

The fourth proportional to 1,321,672.40, 1,823,920.76 and 748,700.32 is: 1,033,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,672.40 : 1,823,920.76 = 748,700.32 : x
  2. Step 2: Convert to fraction form
    1,321,672.40/1,823,920.76 = 748,700.32/x
  3. Step 3: Cross multiply
    1,321,672.40x = 1,823,920.76 × 748,700.32
  4. Step 4: Simplify right side
    1,321,672.40x = 1,365,570,056,666.64
  5. Step 5: Solve for x
    x = 1,365,570,056,666.64/1,321,672.40
  6. Step 6: Final answer
    x = 1,033,213.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.