Home / 680,006.10-1,020,009.15-280,514.10

Finding the Fourth Proportional to 680,006.10, 1,020,009.15 and 280,514.10

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Solution

The fourth proportional to 680,006.10, 1,020,009.15 and 280,514.10 is: 420,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,006.10 : 1,020,009.15 = 280,514.10 : x
  2. Step 2: Convert to fraction form
    680,006.10/1,020,009.15 = 280,514.10/x
  3. Step 3: Cross multiply
    680,006.10x = 1,020,009.15 × 280,514.10
  4. Step 4: Simplify right side
    680,006.10x = 286,126,948,704.02
  5. Step 5: Solve for x
    x = 286,126,948,704.02/680,006.10
  6. Step 6: Final answer
    x = 420,771.15

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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.