Home / 1,319,695.80-1,979,148.75-688,265.16

Finding the Fourth Proportional to 1,319,695.80, 1,979,148.75 and 688,265.16

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Solution

The fourth proportional to 1,319,695.80, 1,979,148.75 and 688,265.16 is: 1,032,191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,695.80 : 1,979,148.75 = 688,265.16 : x
  2. Step 2: Convert to fraction form
    1,319,695.80/1,979,148.75 = 688,265.16/x
  3. Step 3: Cross multiply
    1,319,695.80x = 1,979,148.75 × 688,265.16
  4. Step 4: Simplify right side
    1,319,695.80x = 1,362,179,131,082.55
  5. Step 5: Solve for x
    x = 1,362,179,131,082.55/1,319,695.80
  6. Step 6: Final answer
    x = 1,032,191.76

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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.