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Finding the Fourth Proportional to 609,572.12, 841,620.56 and 380,478.39

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Solution

The fourth proportional to 609,572.12, 841,620.56 and 380,478.39 is: 525,316.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,572.12 : 841,620.56 = 380,478.39 : x
  2. Step 2: Convert to fraction form
    609,572.12/841,620.56 = 380,478.39/x
  3. Step 3: Cross multiply
    609,572.12x = 841,620.56 × 380,478.39
  4. Step 4: Simplify right side
    609,572.12x = 320,218,433,757.31
  5. Step 5: Solve for x
    x = 320,218,433,757.31/609,572.12
  6. Step 6: Final answer
    x = 525,316.74

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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.