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Finding the Fourth Proportional to 671,005.30, 926,012.80 and 384,580.66

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Solution

The fourth proportional to 671,005.30, 926,012.80 and 384,580.66 is: 530,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,005.30 : 926,012.80 = 384,580.66 : x
  2. Step 2: Convert to fraction form
    671,005.30/926,012.80 = 384,580.66/x
  3. Step 3: Cross multiply
    671,005.30x = 926,012.80 × 384,580.66
  4. Step 4: Simplify right side
    671,005.30x = 356,126,613,792.45
  5. Step 5: Solve for x
    x = 356,126,613,792.45/671,005.30
  6. Step 6: Final answer
    x = 530,735.92

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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.