Home / 728,457.32-1,005,219.78-406,153.64

Finding the Fourth Proportional to 728,457.32, 1,005,219.78 and 406,153.64

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Solution

The fourth proportional to 728,457.32, 1,005,219.78 and 406,153.64 is: 560,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,457.32 : 1,005,219.78 = 406,153.64 : x
  2. Step 2: Convert to fraction form
    728,457.32/1,005,219.78 = 406,153.64/x
  3. Step 3: Cross multiply
    728,457.32x = 1,005,219.78 × 406,153.64
  4. Step 4: Simplify right side
    728,457.32x = 408,273,672,647.00
  5. Step 5: Solve for x
    x = 408,273,672,647.00/728,457.32
  6. Step 6: Final answer
    x = 560,463.41

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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.