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Finding the Fourth Proportional to 671,002.80, 926,009.34 and 384,578.16

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Solution

The fourth proportional to 671,002.80, 926,009.34 and 384,578.16 is: 530,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,002.80 : 926,009.34 = 384,578.16 : x
  2. Step 2: Convert to fraction form
    671,002.80/926,009.34 = 384,578.16/x
  3. Step 3: Cross multiply
    671,002.80x = 926,009.34 × 384,578.16
  4. Step 4: Simplify right side
    671,002.80x = 356,122,968,120.01
  5. Step 5: Solve for x
    x = 356,122,968,120.01/671,002.80
  6. Step 6: Final answer
    x = 530,732.46

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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.