Home / 917,809.12-1,266,568.23-509,911.75

Finding the Fourth Proportional to 917,809.12, 1,266,568.23 and 509,911.75

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Solution

The fourth proportional to 917,809.12, 1,266,568.23 and 509,911.75 is: 703,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,809.12 : 1,266,568.23 = 509,911.75 : x
  2. Step 2: Convert to fraction form
    917,809.12/1,266,568.23 = 509,911.75/x
  3. Step 3: Cross multiply
    917,809.12x = 1,266,568.23 × 509,911.75
  4. Step 4: Simplify right side
    917,809.12x = 645,838,022,653.70
  5. Step 5: Solve for x
    x = 645,838,022,653.70/917,809.12
  6. Step 6: Final answer
    x = 703,673.57

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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.