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Finding the Fourth Proportional to 672,609.09, 928,206.89 and 370,813.89

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Solution

The fourth proportional to 672,609.09, 928,206.89 and 370,813.89 is: 511,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,609.09 : 928,206.89 = 370,813.89 : x
  2. Step 2: Convert to fraction form
    672,609.09/928,206.89 = 370,813.89/x
  3. Step 3: Cross multiply
    672,609.09x = 928,206.89 × 370,813.89
  4. Step 4: Simplify right side
    672,609.09x = 344,192,005,751.63
  5. Step 5: Solve for x
    x = 344,192,005,751.63/672,609.09
  6. Step 6: Final answer
    x = 511,726.66

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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.