Home / 856,664.40-1,284,996.60-458,533.20

Finding the Fourth Proportional to 856,664.40, 1,284,996.60 and 458,533.20

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Solution

The fourth proportional to 856,664.40, 1,284,996.60 and 458,533.20 is: 687,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,664.40 : 1,284,996.60 = 458,533.20 : x
  2. Step 2: Convert to fraction form
    856,664.40/1,284,996.60 = 458,533.20/x
  3. Step 3: Cross multiply
    856,664.40x = 1,284,996.60 × 458,533.20
  4. Step 4: Simplify right side
    856,664.40x = 589,213,602,987.12
  5. Step 5: Solve for x
    x = 589,213,602,987.12/856,664.40
  6. Step 6: Final answer
    x = 687,799.80

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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.