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Finding the Fourth Proportional to 665,733.72, 917,990.02 and 423,706.62

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Solution

The fourth proportional to 665,733.72, 917,990.02 and 423,706.62 is: 584,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,733.72 : 917,990.02 = 423,706.62 : x
  2. Step 2: Convert to fraction form
    665,733.72/917,990.02 = 423,706.62/x
  3. Step 3: Cross multiply
    665,733.72x = 917,990.02 × 423,706.62
  4. Step 4: Simplify right side
    665,733.72x = 388,958,448,567.93
  5. Step 5: Solve for x
    x = 388,958,448,567.93/665,733.72
  6. Step 6: Final answer
    x = 584,255.29

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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.