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Finding the Fourth Proportional to 667,184.76, 920,701.80 and 380,658.60

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Solution

The fourth proportional to 667,184.76, 920,701.80 and 380,658.60 is: 525,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,184.76 : 920,701.80 = 380,658.60 : x
  2. Step 2: Convert to fraction form
    667,184.76/920,701.80 = 380,658.60/x
  3. Step 3: Cross multiply
    667,184.76x = 920,701.80 × 380,658.60
  4. Step 4: Simplify right side
    667,184.76x = 350,473,058,205.48
  5. Step 5: Solve for x
    x = 350,473,058,205.48/667,184.76
  6. Step 6: Final answer
    x = 525,301.35

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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.