Home / 856,785.72-1,283,776.38-518,802.60

Finding the Fourth Proportional to 856,785.72, 1,283,776.38 and 518,802.60

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Solution

The fourth proportional to 856,785.72, 1,283,776.38 and 518,802.60 is: 777,354.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,785.72 : 1,283,776.38 = 518,802.60 : x
  2. Step 2: Convert to fraction form
    856,785.72/1,283,776.38 = 518,802.60/x
  3. Step 3: Cross multiply
    856,785.72x = 1,283,776.38 × 518,802.60
  4. Step 4: Simplify right side
    856,785.72x = 666,026,523,762.59
  5. Step 5: Solve for x
    x = 666,026,523,762.59/856,785.72
  6. Step 6: Final answer
    x = 777,354.84

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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.