Home / 728,675.79-1,005,585.53-406,351.28

Finding the Fourth Proportional to 728,675.79, 1,005,585.53 and 406,351.28

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Solution

The fourth proportional to 728,675.79, 1,005,585.53 and 406,351.28 is: 560,771.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,675.79 : 1,005,585.53 = 406,351.28 : x
  2. Step 2: Convert to fraction form
    728,675.79/1,005,585.53 = 406,351.28/x
  3. Step 3: Cross multiply
    728,675.79x = 1,005,585.53 × 406,351.28
  4. Step 4: Simplify right side
    728,675.79x = 408,620,967,264.98
  5. Step 5: Solve for x
    x = 408,620,967,264.98/728,675.79
  6. Step 6: Final answer
    x = 560,771.98

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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.