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Finding the Fourth Proportional to 452,048.40, 678,850.20 and 319,856.40

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Solution

The fourth proportional to 452,048.40, 678,850.20 and 319,856.40 is: 480,334.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,048.40 : 678,850.20 = 319,856.40 : x
  2. Step 2: Convert to fraction form
    452,048.40/678,850.20 = 319,856.40/x
  3. Step 3: Cross multiply
    452,048.40x = 678,850.20 × 319,856.40
  4. Step 4: Simplify right side
    452,048.40x = 217,134,581,111.28
  5. Step 5: Solve for x
    x = 217,134,581,111.28/452,048.40
  6. Step 6: Final answer
    x = 480,334.81

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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.