Home / 730,502.72-1,008,193.80-420,398.72

Finding the Fourth Proportional to 730,502.72, 1,008,193.80 and 420,398.72

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Solution

The fourth proportional to 730,502.72, 1,008,193.80 and 420,398.72 is: 580,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,502.72 : 1,008,193.80 = 420,398.72 : x
  2. Step 2: Convert to fraction form
    730,502.72/1,008,193.80 = 420,398.72/x
  3. Step 3: Cross multiply
    730,502.72x = 1,008,193.80 × 420,398.72
  4. Step 4: Simplify right side
    730,502.72x = 423,843,383,031.94
  5. Step 5: Solve for x
    x = 423,843,383,031.94/730,502.72
  6. Step 6: Final answer
    x = 580,207.81

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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.