Home / 1,429,121.40-2,143,693.62-518,947.32

Finding the Fourth Proportional to 1,429,121.40, 2,143,693.62 and 518,947.32

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Solution

The fourth proportional to 1,429,121.40, 2,143,693.62 and 518,947.32 is: 778,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,121.40 : 2,143,693.62 = 518,947.32 : x
  2. Step 2: Convert to fraction form
    1,429,121.40/2,143,693.62 = 518,947.32/x
  3. Step 3: Cross multiply
    1,429,121.40x = 2,143,693.62 × 518,947.32
  4. Step 4: Simplify right side
    1,429,121.40x = 1,112,464,059,000.10
  5. Step 5: Solve for x
    x = 1,112,464,059,000.10/1,429,121.40
  6. Step 6: Final answer
    x = 778,425.16

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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.