Home / 728,623.21-1,005,498.08-406,333.66

Finding the Fourth Proportional to 728,623.21, 1,005,498.08 and 406,333.66

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Solution

The fourth proportional to 728,623.21, 1,005,498.08 and 406,333.66 is: 560,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,623.21 : 1,005,498.08 = 406,333.66 : x
  2. Step 2: Convert to fraction form
    728,623.21/1,005,498.08 = 406,333.66/x
  3. Step 3: Cross multiply
    728,623.21x = 1,005,498.08 × 406,333.66
  4. Step 4: Simplify right side
    728,623.21x = 408,567,712,937.70
  5. Step 5: Solve for x
    x = 408,567,712,937.70/728,623.21
  6. Step 6: Final answer
    x = 560,739.36

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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.