Home / 876,785.11-1,209,871.08-509,190.50

Finding the Fourth Proportional to 876,785.11, 1,209,871.08 and 509,190.50

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Solution

The fourth proportional to 876,785.11, 1,209,871.08 and 509,190.50 is: 702,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,785.11 : 1,209,871.08 = 509,190.50 : x
  2. Step 2: Convert to fraction form
    876,785.11/1,209,871.08 = 509,190.50/x
  3. Step 3: Cross multiply
    876,785.11x = 1,209,871.08 × 509,190.50
  4. Step 4: Simplify right side
    876,785.11x = 616,054,863,185.42
  5. Step 5: Solve for x
    x = 616,054,863,185.42/876,785.11
  6. Step 6: Final answer
    x = 702,629.25

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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.