Home / 679,118.58-1,018,564.88-205,691.40

Finding the Fourth Proportional to 679,118.58, 1,018,564.88 and 205,691.40

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Solution

The fourth proportional to 679,118.58, 1,018,564.88 and 205,691.40 is: 308,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,118.58 : 1,018,564.88 = 205,691.40 : x
  2. Step 2: Convert to fraction form
    679,118.58/1,018,564.88 = 205,691.40/x
  3. Step 3: Cross multiply
    679,118.58x = 1,018,564.88 × 205,691.40
  4. Step 4: Simplify right side
    679,118.58x = 209,510,035,129.58
  5. Step 5: Solve for x
    x = 209,510,035,129.58/679,118.58
  6. Step 6: Final answer
    x = 308,502.88

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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.