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Finding the Fourth Proportional to 629,898.98, 869,223.13 and 357,929.12

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Solution

The fourth proportional to 629,898.98, 869,223.13 and 357,929.12 is: 493,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,898.98 : 869,223.13 = 357,929.12 : x
  2. Step 2: Convert to fraction form
    629,898.98/869,223.13 = 357,929.12/x
  3. Step 3: Cross multiply
    629,898.98x = 869,223.13 × 357,929.12
  4. Step 4: Simplify right side
    629,898.98x = 311,120,271,282.78
  5. Step 5: Solve for x
    x = 311,120,271,282.78/629,898.98
  6. Step 6: Final answer
    x = 493,920.90

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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.