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Finding the Fourth Proportional to 452,050.40, 678,853.20 and 319,858.40

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Solution

The fourth proportional to 452,050.40, 678,853.20 and 319,858.40 is: 480,337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,050.40 : 678,853.20 = 319,858.40 : x
  2. Step 2: Convert to fraction form
    452,050.40/678,853.20 = 319,858.40/x
  3. Step 3: Cross multiply
    452,050.40x = 678,853.20 × 319,858.40
  4. Step 4: Simplify right side
    452,050.40x = 217,136,898,386.88
  5. Step 5: Solve for x
    x = 217,136,898,386.88/452,050.40
  6. Step 6: Final answer
    x = 480,337.81

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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.