Home / 1,319,694.30-1,979,146.50-688,263.66

Finding the Fourth Proportional to 1,319,694.30, 1,979,146.50 and 688,263.66

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Solution

The fourth proportional to 1,319,694.30, 1,979,146.50 and 688,263.66 is: 1,032,189.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,694.30 : 1,979,146.50 = 688,263.66 : x
  2. Step 2: Convert to fraction form
    1,319,694.30/1,979,146.50 = 688,263.66/x
  3. Step 3: Cross multiply
    1,319,694.30x = 1,979,146.50 × 688,263.66
  4. Step 4: Simplify right side
    1,319,694.30x = 1,362,174,613,766.19
  5. Step 5: Solve for x
    x = 1,362,174,613,766.19/1,319,694.30
  6. Step 6: Final answer
    x = 1,032,189.51

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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.