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Finding the Fourth Proportional to 671,001.28, 926,007.16 and 384,576.64

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Solution

The fourth proportional to 671,001.28, 926,007.16 and 384,576.64 is: 530,730.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,001.28 : 926,007.16 = 384,576.64 : x
  2. Step 2: Convert to fraction form
    671,001.28/926,007.16 = 384,576.64/x
  3. Step 3: Cross multiply
    671,001.28x = 926,007.16 × 384,576.64
  4. Step 4: Simplify right side
    671,001.28x = 356,120,722,208.74
  5. Step 5: Solve for x
    x = 356,120,722,208.74/671,001.28
  6. Step 6: Final answer
    x = 530,730.32

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Double scale
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Similar ratio
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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.