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Finding the Fourth Proportional to 671,357.64, 926,446.32 and 384,678.48

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Solution

The fourth proportional to 671,357.64, 926,446.32 and 384,678.48 is: 530,840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,357.64 : 926,446.32 = 384,678.48 : x
  2. Step 2: Convert to fraction form
    671,357.64/926,446.32 = 384,678.48/x
  3. Step 3: Cross multiply
    671,357.64x = 926,446.32 × 384,678.48
  4. Step 4: Simplify right side
    671,357.64x = 356,383,962,179.19
  5. Step 5: Solve for x
    x = 356,383,962,179.19/671,357.64
  6. Step 6: Final answer
    x = 530,840.70

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Double scale
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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.