Home / 839,144.91-1,158,103.59-512,439.90

Finding the Fourth Proportional to 839,144.91, 1,158,103.59 and 512,439.90

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Solution

The fourth proportional to 839,144.91, 1,158,103.59 and 512,439.90 is: 707,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,144.91 : 1,158,103.59 = 512,439.90 : x
  2. Step 2: Convert to fraction form
    839,144.91/1,158,103.59 = 512,439.90/x
  3. Step 3: Cross multiply
    839,144.91x = 1,158,103.59 × 512,439.90
  4. Step 4: Simplify right side
    839,144.91x = 593,458,487,849.24
  5. Step 5: Solve for x
    x = 593,458,487,849.24/839,144.91
  6. Step 6: Final answer
    x = 707,218.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.