Home / 876,603.12-1,209,620.15-509,008.43

Finding the Fourth Proportional to 876,603.12, 1,209,620.15 and 509,008.43

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Solution

The fourth proportional to 876,603.12, 1,209,620.15 and 509,008.43 is: 702,378.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,603.12 : 1,209,620.15 = 509,008.43 : x
  2. Step 2: Convert to fraction form
    876,603.12/1,209,620.15 = 509,008.43/x
  3. Step 3: Cross multiply
    876,603.12x = 1,209,620.15 × 509,008.43
  4. Step 4: Simplify right side
    876,603.12x = 615,706,844,854.72
  5. Step 5: Solve for x
    x = 615,706,844,854.72/876,603.12
  6. Step 6: Final answer
    x = 702,378.11

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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.