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Finding the Fourth Proportional to 734,687.80, 1,102,031.70 and 520,070.20

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Solution

The fourth proportional to 734,687.80, 1,102,031.70 and 520,070.20 is: 780,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    734,687.80 : 1,102,031.70 = 520,070.20 : x
  2. Step 2: Convert to fraction form
    734,687.80/1,102,031.70 = 520,070.20/x
  3. Step 3: Cross multiply
    734,687.80x = 1,102,031.70 × 520,070.20
  4. Step 4: Simplify right side
    734,687.80x = 573,133,846,625.34
  5. Step 5: Solve for x
    x = 573,133,846,625.34/734,687.80
  6. Step 6: Final answer
    x = 780,105.30

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Double scale
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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.