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Finding the Fourth Proportional to 509,426.10, 764,139.15 and 462,186.90

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Solution

The fourth proportional to 509,426.10, 764,139.15 and 462,186.90 is: 693,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,426.10 : 764,139.15 = 462,186.90 : x
  2. Step 2: Convert to fraction form
    509,426.10/764,139.15 = 462,186.90/x
  3. Step 3: Cross multiply
    509,426.10x = 764,139.15 × 462,186.90
  4. Step 4: Simplify right side
    509,426.10x = 353,175,104,907.14
  5. Step 5: Solve for x
    x = 353,175,104,907.14/509,426.10
  6. Step 6: Final answer
    x = 693,280.35

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Double scale
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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.