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Finding the Fourth Proportional to 452,465.40, 678,698.10 and 300,906.30

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Solution

The fourth proportional to 452,465.40, 678,698.10 and 300,906.30 is: 451,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,465.40 : 678,698.10 = 300,906.30 : x
  2. Step 2: Convert to fraction form
    452,465.40/678,698.10 = 300,906.30/x
  3. Step 3: Cross multiply
    452,465.40x = 678,698.10 × 300,906.30
  4. Step 4: Simplify right side
    452,465.40x = 204,224,534,088.03
  5. Step 5: Solve for x
    x = 204,224,534,088.03/452,465.40
  6. Step 6: Final answer
    x = 451,359.45

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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.