Home / 645,834.84-968,753.12-308,796.32

Finding the Fourth Proportional to 645,834.84, 968,753.12 and 308,796.32

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Solution

The fourth proportional to 645,834.84, 968,753.12 and 308,796.32 is: 463,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,834.84 : 968,753.12 = 308,796.32 : x
  2. Step 2: Convert to fraction form
    645,834.84/968,753.12 = 308,796.32/x
  3. Step 3: Cross multiply
    645,834.84x = 968,753.12 × 308,796.32
  4. Step 4: Simplify right side
    645,834.84x = 299,147,398,444.52
  5. Step 5: Solve for x
    x = 299,147,398,444.52/645,834.84
  6. Step 6: Final answer
    x = 463,194.89

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Double scale
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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.