Home / 523,140.48-721,837.44-319,144.32

Finding the Fourth Proportional to 523,140.48, 721,837.44 and 319,144.32

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Solution

The fourth proportional to 523,140.48, 721,837.44 and 319,144.32 is: 440,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,140.48 : 721,837.44 = 319,144.32 : x
  2. Step 2: Convert to fraction form
    523,140.48/721,837.44 = 319,144.32/x
  3. Step 3: Cross multiply
    523,140.48x = 721,837.44 × 319,144.32
  4. Step 4: Simplify right side
    523,140.48x = 230,370,318,939.34
  5. Step 5: Solve for x
    x = 230,370,318,939.34/523,140.48
  6. Step 6: Final answer
    x = 440,360.34

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1.5x scale

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.