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Finding the Fourth Proportional to 690,126.94, 952,292.46 and 384,130

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Solution

The fourth proportional to 690,126.94, 952,292.46 and 384,130 is: 530,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,126.94 : 952,292.46 = 384,130 : x
  2. Step 2: Convert to fraction form
    690,126.94/952,292.46 = 384,130/x
  3. Step 3: Cross multiply
    690,126.94x = 952,292.46 × 384,130
  4. Step 4: Simplify right side
    690,126.94x = 365,804,102,659.80
  5. Step 5: Solve for x
    x = 365,804,102,659.80/690,126.94
  6. Step 6: Final answer
    x = 530,053.36

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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.