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Finding the Fourth Proportional to 486,485.28, 670,980.12 and 418,615.92

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Solution

The fourth proportional to 486,485.28, 670,980.12 and 418,615.92 is: 577,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,485.28 : 670,980.12 = 418,615.92 : x
  2. Step 2: Convert to fraction form
    486,485.28/670,980.12 = 418,615.92/x
  3. Step 3: Cross multiply
    486,485.28x = 670,980.12 × 418,615.92
  4. Step 4: Simplify right side
    486,485.28x = 280,882,960,235.51
  5. Step 5: Solve for x
    x = 280,882,960,235.51/486,485.28
  6. Step 6: Final answer
    x = 577,371.96

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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.