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Finding the Fourth Proportional to 834,402.80, 1,250,729.40 and 328,768.40

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Solution

The fourth proportional to 834,402.80, 1,250,729.40 and 328,768.40 is: 492,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,402.80 : 1,250,729.40 = 328,768.40 : x
  2. Step 2: Convert to fraction form
    834,402.80/1,250,729.40 = 328,768.40/x
  3. Step 3: Cross multiply
    834,402.80x = 1,250,729.40 × 328,768.40
  4. Step 4: Simplify right side
    834,402.80x = 411,200,303,670.96
  5. Step 5: Solve for x
    x = 411,200,303,670.96/834,402.80
  6. Step 6: Final answer
    x = 492,807.91

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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.