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Finding the Fourth Proportional to 520,072.05, 780,108.08 and 460,974.45

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Solution

The fourth proportional to 520,072.05, 780,108.08 and 460,974.45 is: 691,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072.05 : 780,108.08 = 460,974.45 : x
  2. Step 2: Convert to fraction form
    520,072.05/780,108.08 = 460,974.45/x
  3. Step 3: Cross multiply
    520,072.05x = 780,108.08 × 460,974.45
  4. Step 4: Simplify right side
    520,072.05x = 359,609,890,813.68
  5. Step 5: Solve for x
    x = 359,609,890,813.68/520,072.05
  6. Step 6: Final answer
    x = 691,461.68

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.