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Finding the Fourth Proportional to 645,624.70, 968,307.45 and 308,664.70

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Solution

The fourth proportional to 645,624.70, 968,307.45 and 308,664.70 is: 462,935.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,624.70 : 968,307.45 = 308,664.70 : x
  2. Step 2: Convert to fraction form
    645,624.70/968,307.45 = 308,664.70/x
  3. Step 3: Cross multiply
    645,624.70x = 968,307.45 × 308,664.70
  4. Step 4: Simplify right side
    645,624.70x = 298,882,328,562.02
  5. Step 5: Solve for x
    x = 298,882,328,562.02/645,624.70
  6. Step 6: Final answer
    x = 462,935.09

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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.