Home / 917,808.12-1,266,566.85-509,910.75

Finding the Fourth Proportional to 917,808.12, 1,266,566.85 and 509,910.75

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Solution

The fourth proportional to 917,808.12, 1,266,566.85 and 509,910.75 is: 703,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,808.12 : 1,266,566.85 = 509,910.75 : x
  2. Step 2: Convert to fraction form
    917,808.12/1,266,566.85 = 509,910.75/x
  3. Step 3: Cross multiply
    917,808.12x = 1,266,566.85 × 509,910.75
  4. Step 4: Simplify right side
    917,808.12x = 645,836,052,408.64
  5. Step 5: Solve for x
    x = 645,836,052,408.64/917,808.12
  6. Step 6: Final answer
    x = 703,672.19

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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.