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Finding the Fourth Proportional to 547,814.60, 821,721.90 and 370,521.80

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Solution

The fourth proportional to 547,814.60, 821,721.90 and 370,521.80 is: 555,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,814.60 : 821,721.90 = 370,521.80 : x
  2. Step 2: Convert to fraction form
    547,814.60/821,721.90 = 370,521.80/x
  3. Step 3: Cross multiply
    547,814.60x = 821,721.90 × 370,521.80
  4. Step 4: Simplify right side
    547,814.60x = 304,465,877,487.42
  5. Step 5: Solve for x
    x = 304,465,877,487.42/547,814.60
  6. Step 6: Final answer
    x = 555,782.70

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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.