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Finding the Fourth Proportional to 630,849.40, 946,274.10 and 406,900.60

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Solution

The fourth proportional to 630,849.40, 946,274.10 and 406,900.60 is: 610,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,849.40 : 946,274.10 = 406,900.60 : x
  2. Step 2: Convert to fraction form
    630,849.40/946,274.10 = 406,900.60/x
  3. Step 3: Cross multiply
    630,849.40x = 946,274.10 × 406,900.60
  4. Step 4: Simplify right side
    630,849.40x = 385,039,499,054.46
  5. Step 5: Solve for x
    x = 385,039,499,054.46/630,849.40
  6. Step 6: Final answer
    x = 610,350.90

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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.