Home / 728,580.03-1,005,444.81-406,310.49

Finding the Fourth Proportional to 728,580.03, 1,005,444.81 and 406,310.49

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Solution

The fourth proportional to 728,580.03, 1,005,444.81 and 406,310.49 is: 560,710.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,580.03 : 1,005,444.81 = 406,310.49 : x
  2. Step 2: Convert to fraction form
    728,580.03/1,005,444.81 = 406,310.49/x
  3. Step 3: Cross multiply
    728,580.03x = 1,005,444.81 × 406,310.49
  4. Step 4: Simplify right side
    728,580.03x = 408,522,773,419.06
  5. Step 5: Solve for x
    x = 408,522,773,419.06/728,580.03
  6. Step 6: Final answer
    x = 560,710.91

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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.