Home / 1,129,343-1,693,965.90-287,869.64

Finding the Fourth Proportional to 1,129,343, 1,693,965.90 and 287,869.64

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Solution

The fourth proportional to 1,129,343, 1,693,965.90 and 287,869.64 is: 431,792.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,343 : 1,693,965.90 = 287,869.64 : x
  2. Step 2: Convert to fraction form
    1,129,343/1,693,965.90 = 287,869.64/x
  3. Step 3: Cross multiply
    1,129,343x = 1,693,965.90 × 287,869.64
  4. Step 4: Simplify right side
    1,129,343x = 487,641,353,805.28
  5. Step 5: Solve for x
    x = 487,641,353,805.28/1,129,343
  6. Step 6: Final answer
    x = 431,792.07

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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.