Home / 1,317,534.93-1,818,102.69-728,809.47

Finding the Fourth Proportional to 1,317,534.93, 1,818,102.69 and 728,809.47

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Solution

The fourth proportional to 1,317,534.93, 1,818,102.69 and 728,809.47 is: 1,005,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,534.93 : 1,818,102.69 = 728,809.47 : x
  2. Step 2: Convert to fraction form
    1,317,534.93/1,818,102.69 = 728,809.47/x
  3. Step 3: Cross multiply
    1,317,534.93x = 1,818,102.69 × 728,809.47
  4. Step 4: Simplify right side
    1,317,534.93x = 1,325,050,457,904.47
  5. Step 5: Solve for x
    x = 1,325,050,457,904.47/1,317,534.93
  6. Step 6: Final answer
    x = 1,005,704.23

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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.