Home / 818,830.67-1,228,246.01-319,844.75

Finding the Fourth Proportional to 818,830.67, 1,228,246.01 and 319,844.75

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Solution

The fourth proportional to 818,830.67, 1,228,246.01 and 319,844.75 is: 479,767.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,830.67 : 1,228,246.01 = 319,844.75 : x
  2. Step 2: Convert to fraction form
    818,830.67/1,228,246.01 = 319,844.75/x
  3. Step 3: Cross multiply
    818,830.67x = 1,228,246.01 × 319,844.75
  4. Step 4: Simplify right side
    818,830.67x = 392,848,036,407.72
  5. Step 5: Solve for x
    x = 392,848,036,407.72/818,830.67
  6. Step 6: Final answer
    x = 479,767.13

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1.5x scale

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.