Home / 679,966.80-1,019,950.20-206,590.65

Finding the Fourth Proportional to 679,966.80, 1,019,950.20 and 206,590.65

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Solution

The fourth proportional to 679,966.80, 1,019,950.20 and 206,590.65 is: 309,885.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,966.80 : 1,019,950.20 = 206,590.65 : x
  2. Step 2: Convert to fraction form
    679,966.80/1,019,950.20 = 206,590.65/x
  3. Step 3: Cross multiply
    679,966.80x = 1,019,950.20 × 206,590.65
  4. Step 4: Simplify right side
    679,966.80x = 210,712,174,785.63
  5. Step 5: Solve for x
    x = 210,712,174,785.63/679,966.80
  6. Step 6: Final answer
    x = 309,885.98

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Double scale
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Similar ratio
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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.