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Finding the Fourth Proportional to 448,532.40, 672,798.60 and 431,036.40

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Solution

The fourth proportional to 448,532.40, 672,798.60 and 431,036.40 is: 646,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,532.40 : 672,798.60 = 431,036.40 : x
  2. Step 2: Convert to fraction form
    448,532.40/672,798.60 = 431,036.40/x
  3. Step 3: Cross multiply
    448,532.40x = 672,798.60 × 431,036.40
  4. Step 4: Simplify right side
    448,532.40x = 290,000,686,469.04
  5. Step 5: Solve for x
    x = 290,000,686,469.04/448,532.40
  6. Step 6: Final answer
    x = 646,554.60

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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.