Home / 856,590.30-1,284,885.45-768,116.70

Finding the Fourth Proportional to 856,590.30, 1,284,885.45 and 768,116.70

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Solution

The fourth proportional to 856,590.30, 1,284,885.45 and 768,116.70 is: 1,152,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,590.30 : 1,284,885.45 = 768,116.70 : x
  2. Step 2: Convert to fraction form
    856,590.30/1,284,885.45 = 768,116.70/x
  3. Step 3: Cross multiply
    856,590.30x = 1,284,885.45 × 768,116.70
  4. Step 4: Simplify right side
    856,590.30x = 986,941,971,732.02
  5. Step 5: Solve for x
    x = 986,941,971,732.02/856,590.30
  6. Step 6: Final answer
    x = 1,152,175.05

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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.