Home / 781,129.62-1,077,907.91-436,905.81

Finding the Fourth Proportional to 781,129.62, 1,077,907.91 and 436,905.81

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Solution

The fourth proportional to 781,129.62, 1,077,907.91 and 436,905.81 is: 602,901.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,129.62 : 1,077,907.91 = 436,905.81 : x
  2. Step 2: Convert to fraction form
    781,129.62/1,077,907.91 = 436,905.81/x
  3. Step 3: Cross multiply
    781,129.62x = 1,077,907.91 × 436,905.81
  4. Step 4: Simplify right side
    781,129.62x = 470,944,226,339.43
  5. Step 5: Solve for x
    x = 470,944,226,339.43/781,129.62
  6. Step 6: Final answer
    x = 602,901.51

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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.