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Finding the Fourth Proportional to 834,230.40, 1,251,604.80 and 328,855.20

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Solution

The fourth proportional to 834,230.40, 1,251,604.80 and 328,855.20 is: 493,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,230.40 : 1,251,604.80 = 328,855.20 : x
  2. Step 2: Convert to fraction form
    834,230.40/1,251,604.80 = 328,855.20/x
  3. Step 3: Cross multiply
    834,230.40x = 1,251,604.80 × 328,855.20
  4. Step 4: Simplify right side
    834,230.40x = 411,596,746,824.96
  5. Step 5: Solve for x
    x = 411,596,746,824.96/834,230.40
  6. Step 6: Final answer
    x = 493,384.98

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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.