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Finding the Fourth Proportional to 609,574.38, 841,623.66 and 380,480.64

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Solution

The fourth proportional to 609,574.38, 841,623.66 and 380,480.64 is: 525,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,574.38 : 841,623.66 = 380,480.64 : x
  2. Step 2: Convert to fraction form
    609,574.38/841,623.66 = 380,480.64/x
  3. Step 3: Cross multiply
    609,574.38x = 841,623.66 × 380,480.64
  4. Step 4: Simplify right side
    609,574.38x = 320,221,508,795.94
  5. Step 5: Solve for x
    x = 320,221,508,795.94/609,574.38
  6. Step 6: Final answer
    x = 525,319.83

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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.