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Finding the Fourth Proportional to 672,607.09, 928,204.13 and 370,811.89

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Solution

The fourth proportional to 672,607.09, 928,204.13 and 370,811.89 is: 511,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,607.09 : 928,204.13 = 370,811.89 : x
  2. Step 2: Convert to fraction form
    672,607.09/928,204.13 = 370,811.89/x
  3. Step 3: Cross multiply
    672,607.09x = 928,204.13 × 370,811.89
  4. Step 4: Simplify right side
    672,607.09x = 344,189,127,751.11
  5. Step 5: Solve for x
    x = 344,189,127,751.11/672,607.09
  6. Step 6: Final answer
    x = 511,723.91

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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.