Home / 1,916,429.10-2,872,800.45-1,489,728.30

Finding the Fourth Proportional to 1,916,429.10, 2,872,800.45 and 1,489,728.30

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Solution

The fourth proportional to 1,916,429.10, 2,872,800.45 and 1,489,728.30 is: 2,233,159.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,429.10 : 2,872,800.45 = 1,489,728.30 : x
  2. Step 2: Convert to fraction form
    1,916,429.10/2,872,800.45 = 1,489,728.30/x
  3. Step 3: Cross multiply
    1,916,429.10x = 2,872,800.45 × 1,489,728.30
  4. Step 4: Simplify right side
    1,916,429.10x = 4,279,692,130,617.74
  5. Step 5: Solve for x
    x = 4,279,692,130,617.74/1,916,429.10
  6. Step 6: Final answer
    x = 2,233,159.65

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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.