Home / 783,774.81-1,081,709.28-461,514.78

Finding the Fourth Proportional to 783,774.81, 1,081,709.28 and 461,514.78

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Solution

The fourth proportional to 783,774.81, 1,081,709.28 and 461,514.78 is: 636,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,774.81 : 1,081,709.28 = 461,514.78 : x
  2. Step 2: Convert to fraction form
    783,774.81/1,081,709.28 = 461,514.78/x
  3. Step 3: Cross multiply
    783,774.81x = 1,081,709.28 × 461,514.78
  4. Step 4: Simplify right side
    783,774.81x = 499,224,820,383.16
  5. Step 5: Solve for x
    x = 499,224,820,383.16/783,774.81
  6. Step 6: Final answer
    x = 636,949.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.