Home / 679,117.08-1,018,562.61-205,689.90

Finding the Fourth Proportional to 679,117.08, 1,018,562.61 and 205,689.90

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Solution

The fourth proportional to 679,117.08, 1,018,562.61 and 205,689.90 is: 308,500.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,117.08 : 1,018,562.61 = 205,689.90 : x
  2. Step 2: Convert to fraction form
    679,117.08/1,018,562.61 = 205,689.90/x
  3. Step 3: Cross multiply
    679,117.08x = 1,018,562.61 × 205,689.90
  4. Step 4: Simplify right side
    679,117.08x = 209,508,041,394.64
  5. Step 5: Solve for x
    x = 209,508,041,394.64/679,117.08
  6. Step 6: Final answer
    x = 308,500.62

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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.