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Finding the Fourth Proportional to 690,302.49, 952,608.34 and 380,199.12

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Solution

The fourth proportional to 690,302.49, 952,608.34 and 380,199.12 is: 524,669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,302.49 : 952,608.34 = 380,199.12 : x
  2. Step 2: Convert to fraction form
    690,302.49/952,608.34 = 380,199.12/x
  3. Step 3: Cross multiply
    690,302.49x = 952,608.34 × 380,199.12
  4. Step 4: Simplify right side
    690,302.49x = 362,180,852,572.66
  5. Step 5: Solve for x
    x = 362,180,852,572.66/690,302.49
  6. Step 6: Final answer
    x = 524,669.78

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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.