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Finding the Fourth Proportional to 690,287.04, 952,596 and 388,480.32

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Solution

The fourth proportional to 690,287.04, 952,596 and 388,480.32 is: 536,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,287.04 : 952,596 = 388,480.32 : x
  2. Step 2: Convert to fraction form
    690,287.04/952,596 = 388,480.32/x
  3. Step 3: Cross multiply
    690,287.04x = 952,596 × 388,480.32
  4. Step 4: Simplify right side
    690,287.04x = 370,064,798,910.72
  5. Step 5: Solve for x
    x = 370,064,798,910.72/690,287.04
  6. Step 6: Final answer
    x = 536,102.78

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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.