Home / 679,808.32-1,019,653.52-319,893.76

Finding the Fourth Proportional to 679,808.32, 1,019,653.52 and 319,893.76

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Solution

The fourth proportional to 679,808.32, 1,019,653.52 and 319,893.76 is: 479,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,808.32 : 1,019,653.52 = 319,893.76 : x
  2. Step 2: Convert to fraction form
    679,808.32/1,019,653.52 = 319,893.76/x
  3. Step 3: Cross multiply
    679,808.32x = 1,019,653.52 × 319,893.76
  4. Step 4: Simplify right side
    679,808.32x = 326,180,798,410.04
  5. Step 5: Solve for x
    x = 326,180,798,410.04/679,808.32
  6. Step 6: Final answer
    x = 479,812.90

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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.