Home / 615,743.57-923,907.77-426,495.17

Finding the Fourth Proportional to 615,743.57, 923,907.77 and 426,495.17

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Solution

The fourth proportional to 615,743.57, 923,907.77 and 426,495.17 is: 639,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,743.57 : 923,907.77 = 426,495.17 : x
  2. Step 2: Convert to fraction form
    615,743.57/923,907.77 = 426,495.17/x
  3. Step 3: Cross multiply
    615,743.57x = 923,907.77 × 426,495.17
  4. Step 4: Simplify right side
    615,743.57x = 394,042,203,207.12
  5. Step 5: Solve for x
    x = 394,042,203,207.12/615,743.57
  6. Step 6: Final answer
    x = 639,945.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.