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Finding the Fourth Proportional to 672,617.84, 928,219.80 and 370,822.64

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Solution

The fourth proportional to 672,617.84, 928,219.80 and 370,822.64 is: 511,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,617.84 : 928,219.80 = 370,822.64 : x
  2. Step 2: Convert to fraction form
    672,617.84/928,219.80 = 370,822.64/x
  3. Step 3: Cross multiply
    672,617.84x = 928,219.80 × 370,822.64
  4. Step 4: Simplify right side
    672,617.84x = 344,204,916,736.27
  5. Step 5: Solve for x
    x = 344,204,916,736.27/672,617.84
  6. Step 6: Final answer
    x = 511,739.20

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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.