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Finding the Fourth Proportional to 543,809.10, 815,713.65 and 417,692.10

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Solution

The fourth proportional to 543,809.10, 815,713.65 and 417,692.10 is: 626,538.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,809.10 : 815,713.65 = 417,692.10 : x
  2. Step 2: Convert to fraction form
    543,809.10/815,713.65 = 417,692.10/x
  3. Step 3: Cross multiply
    543,809.10x = 815,713.65 × 417,692.10
  4. Step 4: Simplify right side
    543,809.10x = 340,717,147,467.17
  5. Step 5: Solve for x
    x = 340,717,147,467.17/543,809.10
  6. Step 6: Final answer
    x = 626,538.15

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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.