Home / 728,622.71-1,005,497.39-406,333.16

Finding the Fourth Proportional to 728,622.71, 1,005,497.39 and 406,333.16

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Solution

The fourth proportional to 728,622.71, 1,005,497.39 and 406,333.16 is: 560,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,622.71 : 1,005,497.39 = 406,333.16 : x
  2. Step 2: Convert to fraction form
    728,622.71/1,005,497.39 = 406,333.16/x
  3. Step 3: Cross multiply
    728,622.71x = 1,005,497.39 × 406,333.16
  4. Step 4: Simplify right side
    728,622.71x = 408,566,929,818.79
  5. Step 5: Solve for x
    x = 408,566,929,818.79/728,622.71
  6. Step 6: Final answer
    x = 560,738.67

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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.