Home / 728,956.32-1,005,960.15-406,666.41

Finding the Fourth Proportional to 728,956.32, 1,005,960.15 and 406,666.41

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Solution

The fourth proportional to 728,956.32, 1,005,960.15 and 406,666.41 is: 561,199.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,956.32 : 1,005,960.15 = 406,666.41 : x
  2. Step 2: Convert to fraction form
    728,956.32/1,005,960.15 = 406,666.41/x
  3. Step 3: Cross multiply
    728,956.32x = 1,005,960.15 × 406,666.41
  4. Step 4: Simplify right side
    728,956.32x = 409,090,208,662.75
  5. Step 5: Solve for x
    x = 409,090,208,662.75/728,956.32
  6. Step 6: Final answer
    x = 561,199.89

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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.