Home / 1,309,406.27-1,965,159.16-678,500.51

Finding the Fourth Proportional to 1,309,406.27, 1,965,159.16 and 678,500.51

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Solution

The fourth proportional to 1,309,406.27, 1,965,159.16 and 678,500.51 is: 1,018,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,406.27 : 1,965,159.16 = 678,500.51 : x
  2. Step 2: Convert to fraction form
    1,309,406.27/1,965,159.16 = 678,500.51/x
  3. Step 3: Cross multiply
    1,309,406.27x = 1,965,159.16 × 678,500.51
  4. Step 4: Simplify right side
    1,309,406.27x = 1,333,361,480,769.12
  5. Step 5: Solve for x
    x = 1,333,361,480,769.12/1,309,406.27
  6. Step 6: Final answer
    x = 1,018,294.72

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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.