Home / 728,783.07-1,005,718.03-406,492.92

Finding the Fourth Proportional to 728,783.07, 1,005,718.03 and 406,492.92

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Solution

The fourth proportional to 728,783.07, 1,005,718.03 and 406,492.92 is: 560,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,783.07 : 1,005,718.03 = 406,492.92 : x
  2. Step 2: Convert to fraction form
    728,783.07/1,005,718.03 = 406,492.92/x
  3. Step 3: Cross multiply
    728,783.07x = 1,005,718.03 × 406,492.92
  4. Step 4: Simplify right side
    728,783.07x = 408,817,257,695.12
  5. Step 5: Solve for x
    x = 408,817,257,695.12/728,783.07
  6. Step 6: Final answer
    x = 560,958.77

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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.