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Finding the Fourth Proportional to 479,670.49, 662,031.93 and 286,090.62

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Solution

The fourth proportional to 479,670.49, 662,031.93 and 286,090.62 is: 394,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,670.49 : 662,031.93 = 286,090.62 : x
  2. Step 2: Convert to fraction form
    479,670.49/662,031.93 = 286,090.62/x
  3. Step 3: Cross multiply
    479,670.49x = 662,031.93 × 286,090.62
  4. Step 4: Simplify right side
    479,670.49x = 189,401,125,313.50
  5. Step 5: Solve for x
    x = 189,401,125,313.50/479,670.49
  6. Step 6: Final answer
    x = 394,856.74

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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.