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Finding the Fourth Proportional to 380,485.35, 571,004.81 and 306,498.77

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Solution

The fourth proportional to 380,485.35, 571,004.81 and 306,498.77 is: 459,971.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,485.35 : 571,004.81 = 306,498.77 : x
  2. Step 2: Convert to fraction form
    380,485.35/571,004.81 = 306,498.77/x
  3. Step 3: Cross multiply
    380,485.35x = 571,004.81 × 306,498.77
  4. Step 4: Simplify right side
    380,485.35x = 175,012,270,832.20
  5. Step 5: Solve for x
    x = 175,012,270,832.20/380,485.35
  6. Step 6: Final answer
    x = 459,971.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.