Home / 1,270,505.78-1,905,354.05-417,379.40

Finding the Fourth Proportional to 1,270,505.78, 1,905,354.05 and 417,379.40

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Solution

The fourth proportional to 1,270,505.78, 1,905,354.05 and 417,379.40 is: 625,936.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,505.78 : 1,905,354.05 = 417,379.40 : x
  2. Step 2: Convert to fraction form
    1,270,505.78/1,905,354.05 = 417,379.40/x
  3. Step 3: Cross multiply
    1,270,505.78x = 1,905,354.05 × 417,379.40
  4. Step 4: Simplify right side
    1,270,505.78x = 795,255,518,562.90
  5. Step 5: Solve for x
    x = 795,255,518,562.90/1,270,505.78
  6. Step 6: Final answer
    x = 625,936.17

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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.