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Finding the Fourth Proportional to 671,003.12, 926,009.90 and 384,578.62

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Solution

The fourth proportional to 671,003.12, 926,009.90 and 384,578.62 is: 530,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,003.12 : 926,009.90 = 384,578.62 : x
  2. Step 2: Convert to fraction form
    671,003.12/926,009.90 = 384,578.62/x
  3. Step 3: Cross multiply
    671,003.12x = 926,009.90 × 384,578.62
  4. Step 4: Simplify right side
    671,003.12x = 356,123,609,448.34
  5. Step 5: Solve for x
    x = 356,123,609,448.34/671,003.12
  6. Step 6: Final answer
    x = 530,733.16

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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.