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Finding the Fourth Proportional to 624,867.55, 862,315.50 and 338,387.56

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Solution

The fourth proportional to 624,867.55, 862,315.50 and 338,387.56 is: 466,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,867.55 : 862,315.50 = 338,387.56 : x
  2. Step 2: Convert to fraction form
    624,867.55/862,315.50 = 338,387.56/x
  3. Step 3: Cross multiply
    624,867.55x = 862,315.50 × 338,387.56
  4. Step 4: Simplify right side
    624,867.55x = 291,796,837,108.35
  5. Step 5: Solve for x
    x = 291,796,837,108.35/624,867.55
  6. Step 6: Final answer
    x = 466,973.90

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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.