Home / 812,483.04-1,121,148.36-485,731.47

Finding the Fourth Proportional to 812,483.04, 1,121,148.36 and 485,731.47

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Solution

The fourth proportional to 812,483.04, 1,121,148.36 and 485,731.47 is: 670,262.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,483.04 : 1,121,148.36 = 485,731.47 : x
  2. Step 2: Convert to fraction form
    812,483.04/1,121,148.36 = 485,731.47/x
  3. Step 3: Cross multiply
    812,483.04x = 1,121,148.36 × 485,731.47
  4. Step 4: Simplify right side
    812,483.04x = 544,577,040,990.89
  5. Step 5: Solve for x
    x = 544,577,040,990.89/812,483.04
  6. Step 6: Final answer
    x = 670,262.66

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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.