Home / 448,530.40-672,795.60-431,034.40

Finding the Fourth Proportional to 448,530.40, 672,795.60 and 431,034.40

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Solution

The fourth proportional to 448,530.40, 672,795.60 and 431,034.40 is: 646,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,530.40 : 672,795.60 = 431,034.40 : x
  2. Step 2: Convert to fraction form
    448,530.40/672,795.60 = 431,034.40/x
  3. Step 3: Cross multiply
    448,530.40x = 672,795.60 × 431,034.40
  4. Step 4: Simplify right side
    448,530.40x = 289,998,047,768.64
  5. Step 5: Solve for x
    x = 289,998,047,768.64/448,530.40
  6. Step 6: Final answer
    x = 646,551.60

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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.