Home / 1,145,728.96-1,718,595.69-426,228.43

Finding the Fourth Proportional to 1,145,728.96, 1,718,595.69 and 426,228.43

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Solution

The fourth proportional to 1,145,728.96, 1,718,595.69 and 426,228.43 is: 639,343.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,728.96 : 1,718,595.69 = 426,228.43 : x
  2. Step 2: Convert to fraction form
    1,145,728.96/1,718,595.69 = 426,228.43/x
  3. Step 3: Cross multiply
    1,145,728.96x = 1,718,595.69 × 426,228.43
  4. Step 4: Simplify right side
    1,145,728.96x = 732,514,342,753.47
  5. Step 5: Solve for x
    x = 732,514,342,753.47/1,145,728.96
  6. Step 6: Final answer
    x = 639,343.48

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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.