Home / 1,345,686.78-2,018,919.78-399,080.28

Finding the Fourth Proportional to 1,345,686.78, 2,018,919.78 and 399,080.28

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Solution

The fourth proportional to 1,345,686.78, 2,018,919.78 and 399,080.28 is: 598,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,686.78 : 2,018,919.78 = 399,080.28 : x
  2. Step 2: Convert to fraction form
    1,345,686.78/2,018,919.78 = 399,080.28/x
  3. Step 3: Cross multiply
    1,345,686.78x = 2,018,919.78 × 399,080.28
  4. Step 4: Simplify right side
    1,345,686.78x = 805,711,071,099.94
  5. Step 5: Solve for x
    x = 805,711,071,099.94/1,345,686.78
  6. Step 6: Final answer
    x = 598,735.96

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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.