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Finding the Fourth Proportional to 452,215.40, 678,323.10 and 401,039.60

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Solution

The fourth proportional to 452,215.40, 678,323.10 and 401,039.60 is: 601,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,215.40 : 678,323.10 = 401,039.60 : x
  2. Step 2: Convert to fraction form
    452,215.40/678,323.10 = 401,039.60/x
  3. Step 3: Cross multiply
    452,215.40x = 678,323.10 × 401,039.60
  4. Step 4: Simplify right side
    452,215.40x = 272,034,424,694.76
  5. Step 5: Solve for x
    x = 272,034,424,694.76/452,215.40
  6. Step 6: Final answer
    x = 601,559.40

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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.