Home / 839,475.40-1,259,097.90-278,451.40

Finding the Fourth Proportional to 839,475.40, 1,259,097.90 and 278,451.40

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Solution

The fourth proportional to 839,475.40, 1,259,097.90 and 278,451.40 is: 417,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,475.40 : 1,259,097.90 = 278,451.40 : x
  2. Step 2: Convert to fraction form
    839,475.40/1,259,097.90 = 278,451.40/x
  3. Step 3: Cross multiply
    839,475.40x = 1,259,097.90 × 278,451.40
  4. Step 4: Simplify right side
    839,475.40x = 350,597,572,992.06
  5. Step 5: Solve for x
    x = 350,597,572,992.06/839,475.40
  6. Step 6: Final answer
    x = 417,638.89

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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.