Home / 672,157.11-927,153.03-400,021.80

Finding the Fourth Proportional to 672,157.11, 927,153.03 and 400,021.80

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Solution

The fourth proportional to 672,157.11, 927,153.03 and 400,021.80 is: 551,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,157.11 : 927,153.03 = 400,021.80 : x
  2. Step 2: Convert to fraction form
    672,157.11/927,153.03 = 400,021.80/x
  3. Step 3: Cross multiply
    672,157.11x = 927,153.03 × 400,021.80
  4. Step 4: Simplify right side
    672,157.11x = 370,881,423,936.05
  5. Step 5: Solve for x
    x = 370,881,423,936.05/672,157.11
  6. Step 6: Final answer
    x = 551,777.88

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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.