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Finding the Fourth Proportional to 450,499.84, 621,512.94 and 289,332.52

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Solution

The fourth proportional to 450,499.84, 621,512.94 and 289,332.52 is: 399,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,499.84 : 621,512.94 = 289,332.52 : x
  2. Step 2: Convert to fraction form
    450,499.84/621,512.94 = 289,332.52/x
  3. Step 3: Cross multiply
    450,499.84x = 621,512.94 × 289,332.52
  4. Step 4: Simplify right side
    450,499.84x = 179,823,905,142.81
  5. Step 5: Solve for x
    x = 179,823,905,142.81/450,499.84
  6. Step 6: Final answer
    x = 399,165.30

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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.